Is fertile period before or after menstruation? Understand!

Physiologically, the fertile period occurs before menstruation, as menstrual bleeding occurs just when there was no conception. But to make it easier to count when it occurs, it is said to be 11 days after the bleeding.

The fertile period is characterized by the release of the egg from the ovaries, which usually happens once per cycle. In rare cases, one egg can be released from each ovary (left and right) or 2 eggs from the same ovary.

It is important to remember that the menstrual cycle begins on the 1st day of menstruation, that is, on the day of bleeding, and ends on the last day before the next menstrual period starts.

For example, if menstruation came down on the 10th and the following month came down on the 7th, the cycle started on the 10th and ended on the 6th.

Although many women do not fit into 28-day cycles, this period is used as a basis for counting. Thus, those who have cycles of 28 days, the fertile period is between the 11th and the 17th.

This is because the fertile phase can last between 4 and 6 days. Of these, the 14th day (half of the cycle) is the most fertile and most likely to fertilize.

Read more: Is it possible to get menstruating? Risks during the menstrual cycle

Symptoms: how to know if I am in the fertile period?

The fertile period occurs in the middle of the menstrual cycle, with a margin of error of 3 days before and 3 days after. For example, if the menstrual cycle started on the 1st and ended on the 30th, the period of release of the egg and, therefore, conducive to conception, is between the 12th and 18th of that month.

So it is important that you write down the days you started menstruating and know how many days your cycles last.

With this information, just calculate half the cycle and add 3 days before and after.

If the cycles are irregular, average over the past 3 months. To do this, add up the days of those menstrual cycles and divide the total amount by 3.

Read more: How do I know if I’m ovulating? Tips and calculator for getting pregnant

But if even with all this math, you have trouble identifying the fertile period, know that your body shows some signs:

Temperature increase

It is normal for women to experience an increase that can vary between 0.5 ° C and 1 ° C in body temperature during the fertile period.

But to correctly observe the temperature, you must measure it when you wake up in the morning, preferably still lying down. This is because the movements heat up the body and can change the result of body temperature.

You should also start measuring the temperature on the first day of the menstrual cycle, that is, on the day that menstruation starts.

Increased libido

Female sexual desire tends to increase during the fertile period. This is because, biologically, the female organism is ready to conceive a pregnancy, which happens through sexual intercourse.

In this phase, the organism also increases the production of odors responsible for attracting and arousing men (pheromones). This can also make your skin and hair more silky and shiny.

Vaginal discharge

During the fertile period, female hormones increase the production of a transparent, odorless and elastic consistency (similar to egg white).

It is released through the vaginal canal and aims to facilitate the encounter between the sperm and the egg, allowing fertilization.


The fertile period occurs approximately in the middle of the menstrual cycle.

As they are different, it is recommended that each woman understand the days of the cycle and thus calculate when she is in the fertile period.

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