Progesterone is clinically available in the form of progesterone gel pills, aminoglutethimide and progesterone injection. No matter which kind of progesterone, it is recommended to use the drug only under the guidance of a doctor, there should be clinical indications before using the drug, if the patient is allergic to progesterone, it should not be applied, and do not interval during the use of progesterone, so as not to cause irregular vaginal bleeding. If it is used to induce menstruation, menstruation will occur 3-7 days after stopping the drug. If it is for tranquilizing the fetus, it is recommended to use progesterone gel pills or progesterone injections for treatment, and only under the guidance of a doctor, and only after the disappearance of clinical symptoms after the use of the drug, you can draw blood to check whether the progesterone has returned to normal.