It is not known why some pregnancies last longer than others.

Chorionic gonadotropin has the effect similar to stress hormones like corticosteroids.

A pregnancy that lasts more than 42 weeks (294 days since the first day of the last menstrual period) is considered post-term.

The vast majority of women deliver between 37 and 42 weeks of pregnancy.

It helps the woman to overcome the stress associated with her pregnancy and weakens her immune system in order to prevent it from “expulsing” the embryo.

HCG levels allow to track the normal development of a pregnancy as well as detect any abnormalities, that’s why it is worth learning its normal levels for each term of pregnancy.