Although it is very common to talk about pregnancy in months, the truth is that gynecologists count the length of gestation by weeks. These weeks are divided by trimesters and it is not done for a matter of comfort, but it has its medical sense. In each of these trimesters there are many changes, as the fetus grows and evolves, from when the egg is fertilized, until the baby is born.
Many women have doubts as to how long a pregnancy lasts, for this reason, today we are going to solve this and other doubts.
How many weeks does a pregnancy last?
In order to determine the probable date of delivery (FPP), the specialists begin to count from the first day of the last period. From that day on, they add 40 weeks and this is how they can estimate the weeks of gestation. A simple tool called a gestiogram is also used for this task, which helps to obtain data such as the weeks of pregnancy, the probable date of delivery and other data related to the development of the baby.
Is it 9 months or 40 weeks?
You may never have stopped to calculate how many months actually add up to 40 weeks, but if you take a quick count, you will see that they almost reach 10 months. So how many weeks does a pregnancy last? Well, if the pregnancy proceeds normally, it should last 10 months of four weeks each month, or 9 calendar months, counting from the first day of your last period. To those 9 months, you have to add one more week.
As you can see, it can seem a bit confusing, for this reason, it is much easier to count the pregnancy by weeks and thus have a more accurate control of how the pregnancy progresses. In weeks, for a normal pregnancy should last between 38 and 40 weeks, which in many cases can be extended to almost 40 weeks without this being rare or unusual.
If you want to know more information on how to count the weeks of pregnancy, do not stop seeing this article where we explain it to you in detail.