It is known that a woman’s gestation period lasts, on average, anywhere from 38 to 41 weeks, being that the 40th week is usually the cut-off for the birth of the baby, according to most doctors. Usually, this timeline creates a lot of confusion during the first prenatal visit to the doctor when the woman is often informed that she is on her fifth or sixth pregnancy week. 

It is common, in these situations, that the pregnant woman is surprised since that the doctor’s math doesn’t add up with when she thought she initially became pregnant. What to do now?

The truth is, counting the length of pregnancy begins even before fertilization has already started. Given that, in most cases (safe for in Vitro Fertilization (IVF) cases), there’s no way to know the exact date and time of when the sperm would have bound to the egg; therefore, doctors utilize a different approach to estimate the delivery date.

That is why us at BabyHome believe we can provide you, future mommy, with all the help and tools you need in such an important moment of your life.

The pregnancy calendar considers the 40 weeks of gestation, wherein the pregnancy begins on the first day of your last menstrual period. If you became pregnant through IVF, then you’d begin to count the start of your pregnancy two weeks prior to the transfer of embryos to the uterus. Therefore, while there is no baby yet, it is still important to follow up every step of the way.

Don’t worry if you don’t remember the exact date of your last menstrual period: in this case, the ultrasound would be the best way to pinpoint how far along you are.

It is important to note that a pregnancy is divided in three trimesters and that, for instance, it is only at the very end of the sixth month of pregnancy that one can say they are six months pregnant.

Attention: Obstetricians prefer keeping track of a pregnancy based on weeks rather than months as it is easier to follow the child’s development. It’s worth noting that the breakdown of the trimesters isn’t necessarily exact given some months have more days than others. That is why, during your pregnancy, you’ll notice that some months account for more weeks than others, as this is an approximate division of the overall gestation period. In sum, that is why weeks are the parameter for measuring the length of a pregnancy.

Since every pregnancy is unique and each woman is different, there might be slight differences in the time it takes for certain predicted characteristics to develop. 

BabyHome highlights that, in regards to the development of the fetus, each baby has their own rhythm when it comes to their growth process, therefore the information we share with you is intended to create more of a baseline of what to expect with your child’s development.