Progesterone is secreted in the body of men as well as in women. In men the level remains the same but in women, from the time of puberty, progesterone levels starts fluctuating. At the time of menstruation cycle the progesterone levels increase to support and regulate the cycle. This is the role of progesterone before pregnancy. Following are the roles of progesterone during pregnancy.
- It prepares the lining of the uterus at the time of implantation.
- It makes the uterus lining thick so as to support the pregnancy. It also prevents the uterus from the contractions.
- It creates a mucous plug at the cervix of uterus which behaves as a wall to stop the entry of bacteria.
- It helps in creating a favorable environment for the baby and maintains a proper flow of nutrients, glycogen and blood flow.