General Practice 2022

How to know if there was fecundationção and nidação

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How to know if there was fecundationção and nidação
How to know if there was fecundationção and nidação
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The best way to know if there has been fertilization and implantation is to wait for the first symptoms of pregnancy that appear a few weeks after the sperm enter the egg. However, implantation can generate very subtle symptoms such as a slight pink discharge and some abdominal discomfort, similar to menstrual cramps, which can be the first symptoms of pregnancy.

Fertilization corresponds to the moment when the egg is fertilized by the sperm, which happens during a woman's fertile period. Implantation is the process following fertilization, in which the fertilized egg travels to the uterus to be implanted in the uterine wall, initiating pregnancy. See more about nesting.

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How to know if there has been fertilization

After fertilization, some women may present some symptoms that are indicative of fertilization, such as mild abdominal cramping between the 6th and 7th day after the fertile period and swollen and painful breasts, for example. However, if there is no sperm, fertilization does not take place, resulting in menstruation. Learn more about fertilization and how to identify it.

For fertilization to take place, the woman must be in her fertile period, as an egg must be released from one of the ovaries, which normally happens 14 days before the first day of the menstrual period. The released egg travels through the fallopian tubes, where it remains viable for up to 24 hours. In addition to the need for a viable egg, there must also be a viable sperm, which is able to survive in the fallopian tubes for up to 72 hours.

The released egg emits chemical signals capable of attracting the sperm, which crosses the outer layer of the egg and makes it impermeable, preventing other sperm from reaching the egg. After penetration, the fusion of the plasma membranes of the egg and sperm occurs so that the chromatin decondensation and dispersion occurs, in order to give rise to the zygote.

How to know if there has been implantation

After fertilization, the fertilized egg travels to the uterus so that it is implanted in the uterine wall and can begin embryonic development, characterizing pregnancy.

When this happens, some women may have some signs and symptoms indicative of implantation, which usually appear between 5 and 7 days after fertilization, such as weak colic and small pinkish or coffee grounds bleeding, for example.. See more about implantation bleeding.

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