Progesterone is a naturally-produced chemical that helps a woman’s body ready itself for pregnancy, according to women’s healthcare expert and pharmacist Marla Ahlgrimm. It’s a vital steroid hormone, both before and during gestation.
Before pregnancy
Prior to implantation, the uterus must undergo certain changes in order to sustain a viable pregnancy. This, reports Marla Ahlgrimm, is accomplished by the ovaries releasing progesterone which thickens the uterine lining.