How many weeks without progesterone?

When a woman is pregnant, she can consider not taking progesterone after 12 weeks. If a woman has a history of miscarriage before this pregnancy, or if there has been a situation where the embryo stops developing, she can take progesterone for two weeks. Progestin can change the permeability of endometrial cells, reduce the excitement of the uterus, and thus reduce the sensitivity of various stimuli to the uterus, and inhibit uterine contractions. In the early stages of pregnancy, the fetus mainly maintains pregnancy through progesterone. As the fetus grows, the corpus luteum can be replaced by the placenta, which can fully secrete hormones to maintain the needs of the fetus. According to different personal constitutions, when taking progesterone, it should be taken under the guidance of a doctor.