Progesterone is a natural progestin and can be taken orally when there is a preterm miscarriage to replenish progesterone and also to stabilize the fetus and preserve the fetus. Progesterone can also be taken orally in the absence of pregnancy to promote menstruation. If some people have a thin endometrium for various reasons and need to get their period quickly, they can take an appropriate amount of progesterone orally to help the endometrium grow and it will serve the purpose of promoting menstruation. When progesterone is taken orally to preserve the fetus, it must be taken regularly and quantitatively according to the doctor’s prescription, and there should not be any unauthorized discontinuation of the drug. When the progesterone level returns to normal, the doctor will decide the dosage and time to stop the medication according to your situation.