The most dangerous days for pregnancy. Are there “safe” days after menstruation?

Today traditional and Alternative medicine offer many methods of contraception. To avoid unwanted pregnancy doctors have also come up with the so-called “conception calendar”, according to which they calculate and favorable days to conceive a child.

What is a conception calendar?

It is also called the Ogino-Clauss method or the calendar method for calculating safe days for sex. It is based on an understanding of the mechanism of a woman’s menstrual cycle, so it can only be used after studying the menstrual cycle, according to at least, for a year and for several months after some kind of breakdown - illness, pregnancy, etc. What is the essence of this method of preventing unwanted pregnancy?

It is believed that sperm in the female genital tract (in fallopian tubes) remains viable for about three to four days. The egg can be fertilized within two days after ovulation. Based on this, it is calculated possible deadline conception: two days before and after are added to the expected day of ovulation (13-14th day for a 28-day cycle and 15-16th day for a 30-day cycle). It turns out that for a 28-day established menstrual cycle from the eleventh to the sixteenth days, pregnancy is very, very likely. For a 30-day established menstrual cycle, days 13 to 18 and so on are “dangerous”…

In order to have a greater guarantee of safety, it is recommended to add four days on each side of the three safe days. It is believed that pregnancy is impossible at all other times. Before relying on a conception calendar, it is better to consult a gynecologist in advance to determine whether this method is acceptable for you.

Dangerous days for conception: reliability of the method

Doctors say that reliability calendar method as a means of contraception is quite low and ranges from 30% to 60%. Therefore, you should not completely rely on the calendar as the only method of contraception.

The main disadvantage and reason for the low reliability of the Ogino-Clauss method of calculating “dangerous” days for conception is that in order to use it, a woman must have a perfectly regular menstrual cycle. And, as reality shows, it is such only among a few.

For all women living in cities, it is rarely possible to talk about a “stable” menstrual cycle: the environment provokes frequent disruptions. Even the healthiest people have situations when ovulation does not occur at all, and menstruation begins and ends at any time.

In young girls, the ovaries often work irregularly, and therefore ovulation may occur a little earlier or later. And there are more than enough reasons that can cause a change in the ovulation cycle: a blow, an accidental fall, shock, illness, psychological or breakdown, accident, climate change or overexcitement, etc.

Therefore, you cannot completely rely on the reliability of the calendar method for calculating days that are dangerous for conception. The physiological method of contraception is not suitable for those women who take hormonal drugs. However, many people use the Ogino method quite successfully as their only method of contraception. Some combine it with other methods of contraception.

Measuring basal temperature allows you to more reliably calculate the ovulation period

Experts believe that the measurement method is more convenient and reliable for calculating “dangerous” and “not dangerous” days for conception.

Basal temperature is the temperature measured in the rectum. You need to measure it correctly in the morning, before getting out of bed. Data is recorded for three to four months, at a minimum. Normally, at the beginning of the menstrual cycle, the temperature does not reach 37.0 degrees (36.6-36.7 ° C). At the time of ovulation, the temperature drops slightly (to 36.2-36.4 ° C), and then steadily remains above 37.0 degrees. The serial number of the day of the cycle on which ovulation occurs, as we have already written, plus minus 3 days ( average duration existence of sperm) - this is dangerous days for pregnancy.

You can create a kind of calendar to determine dangerous days for pregnancy. In addition to the duration of each cycle, it will also record data after measurement basal temperature. Estimated errors can also be included here. For example, related to stressful situations, drinking alcohol, etc.

By the way, such calendars are currently available online. You only need to enter exact data regarding the start critical days how after a few seconds you can get necessary information. According to doctors, the reliability of calculating “dangerous” and “safe” days for conception using basal temperature measurements is 55-60%. But this is only subject to a regular menstrual cycle.

Menstrual period - safe days for conception?

The appropriateness of having sex during menstruation also raises many different opinions. Some consider it simply unhygienic. For someone, sex in menstrual period provides additional sensations and pleasure. However, most of the controversy arises over whether you can or cannot get pregnant during your period. And here medicine does not give a specific answer. However, according to research by doctors, this is precisely what is observed in many women who have had sex during menstruation.

If the fact of pregnancy is obvious, and the future parents have decided that the birth of a child at the present time will not cause any problems, then it is important to remember that and when the gestation of the fetus becomes jeopardized. According to doctors, the entire first trimester is considered the most critical period, when any medications are contraindicated (extremely undesirable).

Especially for Olga Borsuk

Couples who are not yet ready to have a child try to calculate which days they cannot get pregnant. The rest of the time they avoid sexual contact or use barrier methods contraception. But this method does not always work.

Conception occurs when the egg unites with the male reproductive cell and forms ovum. The zygote is then implanted into the uterus, where it begins full development. But not on all days of the cycle the probability of the union of two germ cells is quite high.

All days of the menstrual cycle are divided into three phases:

• follicular;
• ovulatory;
• luteal

In the first half of the menstrual cycle, follicle-stimulating hormone activates the growth of the dominant follicle in the ovary. The process begins from the first day of menstruation. The level of estrogen increases, the egg matures in about two weeks and is released from the follicle.

On the day the egg is released from the ovary, the concentration of luteinizing hormone increases sharply, and the level of estrogen is at its peak. The egg moves along fallopian tubes and goes to the uterus. If a sperm connects with it, fertilization will occur in the absence of other interfering factors.

Works actively in the luteal phase corpus luteum, progesterone levels increase, the concentration of luteinizing hormone is at a minimum. The growth of the mucous membranes of the uterus is stimulated, which peel off with the onset of menstruation.

Methods for determining safe days are based specifically on calculating the phase of the cycle. The first phase is less suitable for conception, since the egg required for this is not yet mature. In the third phase, the probability is higher, the less time has passed since ovulation.

Formula for calculating the most “dangerous” days

To determine dangerous days, the period of ovulation is calculated. If the cycle is stable, this is easier to do. Stable is when the duration for at least 6 months changes no more than 2 days.

• calculate the cycle duration;
• subtract 12-15 days from this value;
• in the resulting interval there is a high probability of pregnancy.

For example, a cycle lasts 28 days. Subtract 15, you get the 13th day of the cycle. Subtract 12 to get day 16. As a result, ovulation occurs from days 13 to 16. The starting point is menstruation (the first day of bleeding).

The number of safe days also depends on the length of the cycle, since the range of 21-35 days is considered the norm. With the shortest and longest cycle, the duration of the safe time will be different. If the cycle lasts 21 days, a woman can become pregnant as early as 7 days from the start of her period. If menstruation begins every 35 days, the first two weeks are safe for sexual intercourse.

You can calculate such a period for any cycle, since the second phase always lasts the same, regardless of individual characteristics woman's body. And here follicular phase lasts differently and it is this period that is safe for sexual contact.

When is the likelihood of getting pregnant minimal?

The period of maturation of the dominant follicle is the safest. At the same level last days luteal phase, when you cannot get pregnant.

Just before your period

This is not to say that it is definitely impossible to get pregnant during this period. But the likelihood is minimal, since the endometrium is already preparing for detachment, and implantation may not occur. The hormonal background also becomes less suitable for the successful implantation of the fertilized egg - the level of progesterone and estrogen decreases before menstruation.

By the beginning of menstruation, the egg already dies without being fertilized, and is later released along with menstruation. Therefore, the likelihood of pregnancy is minimal.

During menstruation

The first day of the cycle, the beginning of menstruation, is also an unfavorable day for conception. The egg is just beginning to mature, the level of progesterone and estrogen is minimal. These hormones are necessary for pregnancy to occur, as they perform a number of functions:

• prepare the uterus for conception;
• reduce the immune response to prevent embryo rejection;
• influence the synthesis of aldosterone and corticosteroids.

When their concentrations are reduced, it is theoretically impossible to become pregnant, since reproductive system I'm just not ready for this. But in order to determine the days that are safe for conception, you need to start from a regular cycle, otherwise the calculation will be incorrect.

Immediately after menstruation

During this period, the likelihood of getting pregnant becomes higher. The egg has been maturing for some time since the beginning of the cycle and is preparing for release; estrogen levels increase. You can get pregnant after your period if your cycle is about three weeks.

Then ovulation occurs within the first 7-10 days from the start of menstruation. Unprotected intercourse can result in male reproductive cells remaining viable at the time of ovulation. The egg will be released and fertilization will occur.

If the cycle is longer than three weeks, the probability is less. Between the onset of menstruation and ovulation, a woman has 7 to 14 safe days when pregnancy will not occur, since the egg has not yet matured. Therefore, the probability of fertilization immediately after menstruation directly depends on how constant and long a woman’s menstrual cycle is.

Why the method for determining safe days often misfires

Using this method to avoid getting pregnant is not always advisable. The fact is that such calculations are valid only with a constant cycle length for an absolutely healthy woman.

But even in this case safe days you can get pregnant. This happens due to the sensitivity of the female body and hormonal levels to external factors. In some cycles, ovulation occurs earlier or later as a result of:

• sleep disturbances, insomnia or lack of sleep;
• poor nutrition;
• severe stress;
• nervous breakdowns;
• change of sexual partner;
• exacerbation of chronic pathologies;
• suffered from influenza or ARVI.

All this affects hormonal background, and it provokes slow growth of the egg, delay of ovulation or its complete absence. This is an anovulatory cycle, which is considered normal even in healthy women, if not repeated too often.

Therefore, even a stable cycle is not a guarantee that fertilization will not occur during safe days.

This calculated method of protecting against unwanted pregnancy is not effective enough, so women track ovulation by basal temperature, pharmacy tests and subjective sensations.

Determining basal temperature most often concerns women who are planning pregnancy. Temperature is measured during the ovulatory phase and recorded on a calendar for 3-4 months in a row to determine which day of the cycle this period begins on. Among the subjective sensations during ovulation:

• the nature of the discharge changes;
• mammary glands swell;
• libido increases;
• appetite increases;
• irritability appears;
• lethargy and decreased performance are noted.

These symptoms may not accompany ovulation in an individual case, and therefore are also insufficient confirmation that the egg has actually left the follicle.

Interrupting sex with a partner is also ineffective, since sperm can also be contained in lubricant and enter the vagina when intercourse is interrupted. This is enough for fertilization if the male reproductive cells remain viable for several days.

To accurately prevent an unwanted pregnancy, it is better to consult a doctor who will help you choose a method of contraception. Medication methods 95-98% effective. Help reduce the chance of pregnancy:

• oral contraceptives;
• condoms;
• spermicidal lubricants, suppositories;
• uterine devices.

Gynecologist after examination and laboratory diagnostics will pick up safe method contraception. You cannot buy such drugs on your own, so as not to harm reproductive function.

The method for determining safe days does not always work even with stable cycle and the absence of any pathologies. Therefore, this method cannot be called effective in preventing unwanted pregnancy. Calculating safe days is suitable as an auxiliary measure when using contraceptives selected by a doctor.

It is quite possible to determine conditionally safe days after menstruation by observing a woman’s menstrual cycle. But this method Contraception does not provide a complete guarantee of preventing pregnancy.

Female cycle and ovulation

The risk of becoming pregnant as a result of unprotected sex occurs at almost any time during the menstrual period. It’s just that some specific part of the cycle is more favorable for conception, and another less so. The greatest chance of getting pregnant exists in the middle of the cycle - women sex cell matures and leaves the follicle. The menstrual cycle begins on the first day of your period. If the female periodicity is 28 days, then days 11-16 are favorable for fertilization. If the cycle is 30 calendar days, then you can easily get pregnant from days 13 to 18. If the period is too short, then it is possible to conceive a child immediately after menstruation or at its final stage.

To calculate your harmless days, you need to divide the female cycle by 2, and then subtract 2 days from the middle and add 2 days. If the duration of the period is 26 days, then days 1-11 and 15-26 will be non-hazardous. But this is the case if ovulation occurs on time, without delays or advances. Nothing is perfect, so you shouldn’t completely trust the calculation of safe periods of the menstrual cycle. It is more suitable for planning pregnancy rather than preventing it. The fact is that even during menstruation there is some probability of giving birth to a baby. An egg can be released very early or very late, and sperm can live actively in a woman’s body for several days.

The ability to get pregnant decreases in the initial and final days of the cycle. Many women believe that the last 10 days are safe days before their period. But this is confirmed only if ovulation has already passed. In addition, there is a possibility that in one month not 1, but 2 eggs will be released at once. When 2 eggs mature and fertilize in 1 phase, twins are born. If unprotected sexual intercourse occurs before menstruation, but menstruation does not occur, then this indicates conception.

The first 10 days of the cycle can also be considered relatively safe from conception. Fertilization did not occur, the epithelial lining tissue of the uterus was completely renewed and came out with menstrual blood, and the new egg has not yet matured. But you shouldn’t rely completely on these days either. To calculate favorable and unfavorable moments for pregnancy, you need to be confident in the consistency of your cycle.

Usually it is characterized by enviable regularity in women aged 25 to 35 years. During this period of life, a girl experiences hormonal levels that are most favorable for conceiving and bearing a child. In the period from and up to 25 years, as well as at the age of 35 years and older, the cycle may change. Therefore, if you are too young or old enough, you cannot protect yourself with harmless periods of time alone, because they will have little meaning.

Women's health and pregnancy

The regularity of the menstrual cycle is influenced by the woman's health status. It's about not only about long-term and serious illnesses. The body is also greatly exhausted by physical and emotional stress, stress, lack of sleep, and adverse weather conditions. There are times when in hot summer periods Women's cycles increase. Abrupt change climate during a vacation or business trip can also provoke the body to rearrange the female cycle.

Ovulation does not always depend on the presence bloody discharge. The opportunity to have a baby also exists in the first months after childbirth. During this period, the first red discharge after childbirth has not yet appeared, and ovulation may already occur. Thanks to this, it is possible to conceive a child after childbirth before the start of a new menstrual cycle. Breastfeeding your baby does not affect your ability to conceive.

After an abortion, there is also a high chance of getting pregnant. IN such a case Ovulation may precede the onset of bleeding, and safe days will be difficult to calculate. Therefore, in the event of an abortion or childbirth, when the cycle was disrupted, you should not rely on harmless days. In such a situation, it is better to use reliable methods of contraception to prevent unwanted conception.

Unreliability of the natural method

A woman's use of her monthly frequency to prevent unwanted pregnancy is natural method contraception. It does not cause such harm to health as the use of hormonal and chemicals. But it is not completely harmless or effective. It is possible to accurately calculate favorable days for conception and draw up a schedule for safe unprotected sex only in 80% of cases, and in 20% unexpected conception occurs.

To plan pregnancy or to prevent it, every woman needs to keep a personal calendar in which she must mark the moment of the onset of menstruation. Such actions are usually performed when planning pregnancy, so that ovulation occurs. In circumstances of preventing fertilization, one must start from the opposite. But the success of conception depends not only on a woman’s physiology.

Sperm can live in the body of the fair sex for several days and actively move through the woman’s reproductive tract. Therefore, to calculate harmless days at the beginning of the female cycle, before ovulation, it is necessary to take into account the fact of the vitality of male reproductive cells. In such a case, the duration of the safe period is reduced by 2-3 days. If ovulation is expected on day 11 of the cycle, and unprotected sex was on day 9, then sperm can survive 2 days in a woman’s body, wait for the egg to form and fertilize it.

The greatest danger of using days unfavorable for conceiving a child is high probability get infected various diseases. Unprotected sexual contact is a prerequisite for the transmission of pathogens from one partner to another. Periods safe from conception can be enjoyed with a permanent and reliable partner who monitors his health and undergoes regular medical examinations. But unprotected sex on safe days cannot be used with different, unstable partners. In such a situation, there is a risk of not only getting pregnant, but also acquiring various serious illnesses.

For some, conceiving a child is a desired and long-awaited process. Other men and women try by all means to avoid this. On what days can you not get pregnant? This question is asked by couples who use interrupted sexual intercourse as contraception or calendar method calculation. The days when you cannot get pregnant will be described in this article. You will find out the opinion of experts on this issue. You can also find out how these most infertile days are calculated.

On what days can you not get pregnant? Doctors answer

If you ask this question to a gynecologist, reproductive specialist or obstetrician, you will not receive a clear and unambiguous answer. In their opinion, days when you cannot get pregnant simply do not exist. Throughout the entire cycle, a woman remains likely to become fertilized. It’s just that on some days it is maximum, while on others it decreases to a minimum. Doctors say: you can never guarantee that pregnancy will not occur during a certain period of the cycle. There is an exception to every rule.

Doctors also note that the female body is very unpredictable. Quite often due to the influence external factors happens to a representative of the fairer sex hormonal disbalance. It is because of this that pregnancy can occur when you definitely don’t expect it.

A little theory

To find out on which days you can’t get pregnant, you should have a fairly clear picture of conception. Even at school, teachers tell children about this during biology and anatomy lessons.

So, male body produces seed cells - sperm. They are capable of fertilizing the female body with every sexual contact. That is why men do not have specific days when they can or cannot conceive a child. If a representative of the stronger sex is healthy, he is always fertile, of course, after puberty.

What can you say about a woman? On what days can you definitely not get pregnant? There is only one answer to this question. Pregnancy cannot occur when there is no egg to fertilize. After all, it is the presence of this gamete in the genitals of the fairer sex that leads to fertilization. Without it, pregnancy is simply impossible.

How to calculate safe days so as not to get pregnant?

Finding out which days you can’t get pregnant is quite simple. It is necessary to know exactly the duration of a woman’s menstrual cycle and the stability of these periods. We can talk about regularity when for at least six months the duration of the cycle has not varied by more than 1-2 days. The dominant follicle ruptures and the egg is released on average two weeks before next menstruation. This is precisely the peculiarity of the second phase. It always lasts the same time. While the first half of the period can normally last from seven days to three weeks.

To calculate which days you cannot get pregnant, subtract 10-14 days from the duration of the cycle. The resulting number will be considered the most fertile day. During this period, the gamete ready for fertilization is released. The woman’s body remains in this state for about two more days. After this, the probability of pregnancy gradually decreases and reaches its minimum at the beginning of menstruation.

What can be said about the first half of the menstrual cycle? During this period, sexual contact with quite high probability may lead to conception. It is worth remembering that sperm can stay in a woman’s uterus and vagina for about one week. Based on these data, you can make a simple calculation. Remember that a lot depends on the length of the menstrual cycle. So, for women with a period of 21 days in the first half there is no safe time. If the cycle lasts 35 days, then its first 14 days can be called infertile.

Menstruation period

On what days of your period can you not get pregnant? If we take into account the woman’s physiology and the calculation method described above, we can answer this question as follows. The first days of discharge can be called safe. However, this rule only applies to women whose cycle lasts 28 days or more. For representatives of the fairer sex with a short period, even the days of menstruation are dangerous.

There is also an opinion that it is impossible to get pregnant during bleeding. This is explained by the fact that the discharge simply washes away sperm and male gametes from the uterus and vagina. Also during this period, the endometrium is in the most unfavorable condition for implantation. Even if fertilization occurs, the fertilized egg simply will not be able to attach and develop further.

On what days after menstruation can you not get pregnant?

Concerning menstrual flow, you already know. Let's try to calculate on which days you definitely can't get pregnant in a given case.

• In a three week cycle safe days can be considered the period from 10 to 21 days.
• If your cycle lasts four weeks, then the absence of pregnancy is likely if you have intercourse from days 1 to 7 and from 18 to 28.
• With a long cycle of five weeks, safe days are the first 14 days, as well as the period from 25 to 35 days.

Summarizing

Many representatives of the fair sex use the methods described above and try to find out on which days they cannot get pregnant. Calculate safe period pretty easy. However, no one can guarantee your success.

Women say that misfires still happen. The reason for this may be hormonal imbalance. In this case, the cycle is shortened or lengthened. The ovulation period similarly shifts. Also, the environment for sperm to stay can be quite favorable. In this case, they will remain in the woman’s body for up to ten days. Statistics say that every third representative of the fairer sex using this method contraception, turns out to be pregnant. Protect yourself correctly. Good health to you!

Choosing a method of protection against unwanted pregnancy is the most important question which every woman decides for herself. There are many methods of contraception (prevention of pregnancy).

The physiological method involves counting the days of the menstrual cycle that are favorable and unfavorable for conception.

All specialists in the field of obstetrics, gynecology and reproductive medicine agree on one thing: there are practically no absolutely safe days from pregnancy. During all days of the cycle, a woman retains the ability to conceive a child to a certain extent. On some days the chance of pregnancy is the highest, and on some days it is very low, but not zero.

According to doctors, one cannot be absolutely sure that fertilization cannot occur on the so-called safe days.

According to medical data, a woman’s body is susceptible to hormonal disruptions for several reasons:

Hormonal imbalances in female body may cause a shift in menstruation, and, therefore, conception can occur on days that are safe, according to the woman’s calculations.

According to experts, days safe from pregnancy can be determined with confidence by having extremely regular periods that do not shift by a single day. Such cases are extremely rare, because a woman’s hormonal levels can change even depending on her emotional state.

Moreover, according to the latest medical research, sperm contains a number of hormonal substances that can accelerate ovulation (the release of an egg ripe for fertilization from the ovary), which increases the chance of conception even on the safest days, according to a woman’s calculations.

It should be remembered that the risk of becoming pregnant to a greater or lesser extent exists on any day.

Methods for calculating days safe from pregnancy

In medicine, certain techniques have been developed for determining the days on which fertilization can occur with least likely. However, a woman needs to understand the fact that these can only be used to make approximate calculations, without one hundred percent certainty.

Calendar counting

The counting algorithm depends on its duration. Using this algorithm, you can determine the days of ovulation, that is, days on which the risk of conception is very high, as well as those days on which there should be practically no fertilization.

Algorithm for determining days safe from pregnancy in a long cycle

So how to calculate? The long menstrual cycle is thirty-five days. Its second phase takes approximately twelve to sixteen days. To determine the ovulation phase from thirty-five, it is necessary to subtract the number of days of the second phase. That works out to about twenty-three.

This means that approximately on this day after the start of menstruation, a mature egg will be released from the follicle (a kind of bubble in the ovary in which the egg is located and matures).

Within two days, the egg is able to merge with the sperm. To twenty three you need to add two.

Therefore, safe days in a long cycle will be approximately from the first to the fourteenth and from the twenty-sixth to the thirty-fifth day after the start of menstruation.

Algorithm for determining days safe from pregnancy in the middle cycle

The average length of the menstrual period is twenty-eight days. The follicle releases the egg on the fourteenth day.

You need to add two days to fourteen. As a result, it turns out that from the seventeenth to the twenty-eighth day, conception is unlikely to occur. And in the first part, the safe days will be from the first to the seventh day.

Algorithm for determining days safe from pregnancy in a short cycle

The short menstrual cycle is a period of twenty-one days. Therefore, the second part of the period is approximately twelve days. The egg leaves the follicle on the ninth day.

Therefore, safe days last from the twelfth to the twenty-first day.

Since the first phase in a cycle of this type lasts only nine days, and sperm in the female organs, as a rule, is viable for ten days, fertilization in the first part can take place at any time.

Anovular cycles

Doctors say that women experience anovular cycles (menstrual periods consisting of only one phase, menstrual bleeding is present, but the egg does not leave the follicle).

The anovular cycle is absolutely safe from pregnancy because female organs during this period they restore their functions.

Anovular periods occur twice a year, but it is impossible to predict exactly when they occur.

The table below shows the relationship between the types of menstrual periods and the number of days of the first and second phases, as well as the periods with the lowest probability of conception.

Determination of basal temperature

A much more reliable way to determine days with high and low risk of conception is the method of determining basal temperature. This method involves measuring the temperature in the rectum. A woman should take measurements in the morning, while still lying in bed.

This technique requires attention and thoroughness. The results obtained must be carefully recorded and then entered into a table. Based on the data in the table, a graph is constructed.

At the very beginning of the period, the temperature is less than 37 degrees. During ovulation, the temperature drops slightly, and on the next day, on the contrary, it rises above 37 degrees until the end of bleeding.

Five days before ovulation and two days after it have the highest chance of fertilizing the egg.

Probability of fertilization during menstruation

During menstruation, the chances of getting pregnant are extremely low. Bleeding represents unfavorable conditions for conception. During this period, it is extremely difficult for the embryo to attach to the endometrium ( inner shell uterus).

Pregnancy is only possible if a woman’s cycle is disrupted or if her menstruation is abnormally long.

In addition, women who have a short menstrual period have increased chance the beginning of pregnancy and during menstruation.

Probability of fertilization during lactation

Previously, there was an opinion that fertilization is impossible during breastfeeding, since during this period the woman does not ovulate. But, according to latest research, follicles are able to mature even at this time. Therefore, fertilization is quite likely during lactation.

Since during lactation a woman has extremely irregular cycles, then it is almost impossible to determine the days likely for pregnancy to occur at this time.

Conclusion

The physiological method of preventing pregnancy makes sense and is theoretically justified.

There are two methods for calculating days safe from pregnancy - the calendar method and the method of measuring basal temperature, the second of which is more reliable.

During the periods of lactation and menstruation there is also some chance of conception. It should be remembered that this method has a number of disadvantages, the main one of which is that it does not provide absolute certainty and guarantee.

For more information about the days when you are most likely to get pregnant, see the following video.