Getting pregnant during menstruation

Is it possible to get pregnant during menstruation? Let’s try to answer the eternal question of whether it is possible to get pregnant with your period

Getting pregnant during menstruation

Is it possible to get pregnant during menstruation?  It is one of the most frequent doubts that affect women who want to avoid pregnancy or are looking for it. It is believed that it is difficult to get pregnant when you are on your period, but is this really the case?

Pregnancy with menstrual cycle

In theory it is not possible to become pregnant during the menstrual cycle , but some considerations must be made about the menstrual cycle in order to answer one of the most frequent doubts of many women. In a classic 28 day cycle we will have the first days of the cycle, then ovulation   around the 14th day, and then we will have the menstruation again after 28 days from the beginning of the previous one.

In this cycle, the fertile  period is between the 13th and the 14th day . Since the average sperm life is 3 days, days between the 10th and 14th day could be considered fertile . On the other days (for safety from 1st to 9th and from 17th to 28th) there would be no danger. But let’s use the conditional because this is not a terrain of certainty!

The reality is very different from the theory and, in fact, many human beings were born following this contraceptive method, later called, by Ogino Knaus.

The problem is not in the theory that it is true and works correctly !!!
The real problem lies in the variability of human behavior, even from a physiological point of view. Menstrual cycles are never all the same, they can be longer or shorter. Hence the first risk because the day of ovulation also moves. Not to mention that in some cycles there may be even more ovulations.

Let’s consider an early cycle , i.e. 20 days long. In this case ovulation is anticipated and coincides with the moment in which the flow of the menstrual cycle is also present. Also, since sperms live for 3 days, you can be pregnant and have your period on the second day of your period . This happens because when the cycle is anticipated, the whole ovulation, with its subsequent 14 days, moves forward and it is not that we should consider an average.

Even in the case of a delay there is the same shift, but postponed. Example of a 32-day cycle: in this case the possibility of pregnancy shifts between the 14th and 18th day of the menstrual cycle because ovulation and its subsequent 14-day period move later in time.

Pregnancy with regular menstruation

So if your periods are regular and arrive on time after 14 days on average from ovulation, you are unlikely to be pregnant. But doubts may arise if: 

  •  losses occur about a week to 10 days after ovulation. In this case it is not menstruation but spotting from pregnancy in progress.
  •  Losses are low and the basal temperature continues to remain high. In these cases, the pregnancy test can remove any doubts. And if the test is negative and more than 14 days have passed since ovulation, you are not waiting.

You can get pregnant after your period

In women with a regular cycle of 28 days, the most fertile days are the central ones, between the 13th and 16th days. So during menstruation and immediately after, you are not fertile, but this is not always the case. In women with a shorter cycle, ovulation could take place even five days after the period and since sperm can survive in the tubes for up to five days, this explains why you can get pregnant during your period and even immediately after your period.

You can get pregnant before your period

We have seen that cycle length and ovulation can vary a lot from woman to woman or from month to month. So in the case of an irregular cycle there could be ovulation even a few days before the cycle. It is therefore possible to get pregnant even 2/3 days before menstruation.

False menstruation in pregnancy

Once we have established that it is possible to get pregnant during menstruation, let’s try to understand if the period can come in pregnancy and why there may be bleeding during pregnancy. During pregnant women, false menstruation is an event that should not alarm future mothers, as long as they do not occur accompanied by other symptoms or ailments. False menstruation, as the name implies, does not have the characteristics of the actual menstrual cycle and in particular the blood losses that occur at the beginning of pregnancy are to be identified as embryo implantation losses., or blood residues in the uterus. False menstruation could also be a symptom of polyps inside the cervical canal or rupture of varices and blood vessels within the female reproductive system. If, on the other hand, the menstruation is abundant and persistent, accompanied by cramps, losses, then it is necessary to consult a doctor.

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