Your at-home pregnancy test confirmed the big news when it found hCG — aka the pregnancy hormone ... the levels start off very low. But they rapidly increase during the early weeks of ...

It's the primary reproductive hormone for females, especially during puberty and menstruation. It also plays a role during pregnancy and postpartum (after birth). Males produce lower levels of ...

There are three main types of estrogen: Estrone, which appears after menopause, Estradiol, the most potent estrogen during reproductive years, and Estriol, the primary estrogen found during pregnancy ...