Progesterone is not an estrogen, but a progesterone secreted by the corpus luteum of the ovary, which plays a key role in the growth and development of women. Progesterone is commonly used in the treatment of pre-eclampsia and habitual miscarriage, PMS, anovulatory dysfunction and anovulatory amenorrhea. The use of progesterone is under the guidance of a doctor and should not be used casually, there are oral and injectable forms. Some people with low progesterone in early pregnancy can be given progesterone injections or orally to be able to give birth control treatment and to review the progesterone results. Some patients will have irregular menstruation and can apply progesterone to improve their menstruation.