Week 3 of pregnancy: start of embryo development

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The third week of gestation corresponds to the third week after the date of the last rule (FUR). Normally, the woman does not yet know that she is pregnant and pregnancy tests can still lead to false negatives.

Actually, this third week of pregnancy would be the first of embryonic development. However, all professionals in the sector take as a reference the beginning of the menstrual cycle to start counting the weeks of pregnancy in a gestation of 40 weeks. It is what is known as gestational age.

Therefore, during this three pregnancy week, the events that take place are the fertilization and the beginning of the development of the embryo.

Below you have an index with all the points that we will discuss in this article.

Index

What happens the third week of pregnancy?

At the end of the second week or beginning of the third week of pregnancy, ovulation takes place. These are the fertile days of the woman and, therefore, the couple must have unprotected sex for the conception to occur.

After intercourse, the ejaculated sperm begin their journey through the female reproductive tract: they ascend through the cervix, pass through the uterus and reach the fallopian tubes. This is where the encounter with the ovum and fertilization by a single sperm takes place.



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