The 3 weeks of gestation represent the moment when the fertilization of the egg actually occurs. So, in fact, it is the first week of pregnancy.
Therefore, in general, there is not much evidence of pregnancy before that time, considering that it is 3 weeks since the woman’s last menstruation
Some signs may appear from the third week, and tests can confirm the pregnancy. In this text, we will talk about this gestational phase and the development of the fetus. Come on?
How many months is 3 weeks of gestation?
The calculation of months of gestation is made from the woman’s last menstruation. Thus, even though it is the week in which fertilization actually occurs, the third week is considered half of the first month of pregnancy , which lasts until 4 and a half weeks. It is when the fetus begins to develop inside the uterus.
This gestational calculation is based on the DUM (Day of Last Menstruation) because, in general, it is difficult to determine the precise date of fertilization. For this reason, the LMP is adopted internationally as the start of gestational counts.
It is very common that the woman still does not know that she is pregnant at that moment, since the symptoms have not appeared (or are very subtle).
Exams at 3 weeks gestation
The moment of fertilization is the mark where the production of hormones begins to accelerate. Thanks to this, it is possible to check if you are really pregnant after 3 weeks of gestation. The tests done at this stage are:
The most common pregnancy test measures a woman’s hormone concentrations of beta HCG. The hormone is produced by the placental-forming cells and is a fraction of the specific pregnancy hormone, HCG.