Can I get pregnant before menstruation, the probability of conception on the day before the onset of menstruation

All women of childbearing age can be divided into two groups. Some of them are doing their best to learn the delights of motherhood, while others are looking forward to the arrival of menstruation - the main indication that conception has not occurred. At the same time everyone is interested, it is possible to get pregnant before menstruation and what are the chances of fertilization in this period.

Menstrual Calendar: safe days

Normally, regular cycle is 28 days, but in practice this cyclicity is noted not all women. Approximately half of the fairer sex menses appear irregularly, begin it early, later than expected. In this case, to determine the time of release of the egg from the follicle is not possible.

Typically, this process takes place for 12-14 days before the start of the next cycle. The ovum moves into the fallopian tube. If there is a sperm, the risk of becoming pregnant increases during this period. In its absence, gamete remains viable for about 24 hours. Accordingly, in these days it is possible to conceive a maximum likelihood.

Sperm cells are active in a woman's body for about four days, but the viability of the strongest so great that fertilization can occur, and a week after the intimate proximity.

It is believed that only 5 days before menstruation can become pregnant (ovulation, the day of release gametes and the subsequent day after that).

Thus, in a cycle lasting 28 days, beginning with the 15th day you can not get pregnant. A few days before this date is celebrated release of an egg from the follicle, and by the 15th day she dies. Respectively, it is almost impossible to get pregnant before menstruation. These days are considered to be as safe as possible.

Conception can occur with a probability no more than five percent before menstruation, but only under the condition that the monthly menstruation come smoothly.

Find out more information about dangerous days for pregnancyRead a separate article on our site.

Chance of pregnancy before menstruation

It is proved that fertilization can take place any day of the cycle, even in the period of safe days. The highest chances are observed in ovulatory period, but the likelihood of getting pregnant before menstruation also exists, though much smaller. Therefore, the calendar method of protection can not be considered reliable.

If we talk about whether it is possible to get pregnant during PMS, the doctors say that fertilization in this period is not excluded.

Even during menstruation may be pregnant. After menses probability of successful fertilization is 17%, before they started - does not exceed 5%.

What a chance to get pregnant before menstruation, it depends on many factors. A woman's body is different, and the processes that take place in it, is not always predictable.

Possible causes of conception before menstruation

Pregnancy before menstruation occurs rarely. There are a number of reasons that can lead to unplanned fertilization in this period.

Individual characteristics

In many ways, the chances of conception depends on the individual characteristics of the female body. In order to become capable egg to fertilize, you need a certain concentration of hormones in the blood. In each of the phases of the cycle of their level should be different.

Any hormonal disorders can lead to malfunctions of the reproductive system. If the production of hormones takes place with deviations from the norm, it is quite possible to conceive for nine days before menstruation and directly in front of them.

Another factor that puts into question the effectiveness of the calendar method is a regular cycle. Any failures lead to a shift in the date of ovulation, and thus, accurately calculate the safe days is almost impossible.

Period of life of sperm

Most sperm dies three days later after being hit in the reproductive system, and the possibility of pregnancy before the monthly minimum. This is due to the fact that women are immune cells reject the foreign body.

If the partner is a constant, the period of life significantly increases sperm. Immunity starts after a while to get used to them, due to which they do not die within a week.

Thus, before menstruation, you can get pregnant, and if the partner is a constant, then the chances increase significantly.

Possibility of re ovulation

Probability re-ovulatory process during one menstrual cycle is primarily due to disorders of the hormonal system. This phenomenon is considered to be far from uncommon. Among the main symptoms that are observed in this case, are the following:

• unilateral pain in the abdomen;
• increased libido;
• breast tenderness;
• change in basal body temperature.

On this basis, it becomes clear that to get pregnant before menstruation possible.

Use of hormonal contraceptives

If a woman starts to protect the means of contraception in the form of oral preparations, it does not even think that can get pregnant. Although to forget about the possibility of fertilization is not necessary in this case.

Guarantee of the protection method is 99%, but only under the condition that the doctor selects a medicament. Otherwise, its effectiveness will be significantly less.

In addition, after taking the tablets fertilization is possible at any day of the cycle, including before menstruation. The operating principle of contraceptive medicines based on the fact that the egg comes out of the follicle. In this case, the sperm in the reproductive tract penetrate unhindered. Accordingly, as soon as the appointment is terminated OK, the risk of becoming pregnant increases. The more that you know the exact day of onset of menses during the reproductive function recovery impossible.

Myths and Reality

The female body is completely unpredictable, so no doctor would not give a precise answer to the question whether a girl can become pregnant before menstruation. In some cases, fertilization does not occur, but sometimes still celebrated conception in the period of the cycle. No matter how carefully the woman did not lead the calendar, as is often not measured the basal temperature, no matter what method of contraception is not used, to avoid pregnancy is not always possible.

There are a few myths that only contribute to unplanned fertility.

Security intercourse a few days before menstruation

Opinion that unprotected intercourse a few days before the beginning of menstruation is safe and fertilization in this period is not possible, common to many women. In fact, getting pregnant before menstruation is quite possible. The chances, though not great, but they are still there. This is due to sperm, and the duration of menstruation cycle instability. In addition, it is necessary to take into account the individual characteristics of the body also affects the reproductive system and could lead to unexpected changes in its activities.

First sexual intercourse

Many girls do not know reliably whether it is possible to get pregnant before menstruation, if earlier they have never had intimacy. Some are convinced that the first sexual relationship, starting a few days before menstruation is absolutely safe, and conception at the same time can not occur.

There is no difference, what the account once a woman enters into an intimate relationship. The emergence of a new life is able to happen at any moment. According to statistics, the pregnancy before menstruation occurs with a probability of 1-6%. Hope in case it is not necessary, it is better to find a more reliable method of contraception.

The risk of conception before critical days is small, but a guarantee that pregnancy in this period did not come, and no. Doctors do not recommend to use the calendar method of contraception, as convinced of its unreliability.

The processes occurring in the female body, noticeable not always. Determine at home when ovulation has occurred and whether it is approaching again, is quite difficult. Therefore it is necessary to question the efficacy of the protection method.