Progesterone is a progestin that helps the endometrial lining to grow, to induce menstruation or to stabilize the fetus. If progesterone is used to induce menstruation, it will come only after 7-8 days of stopping the medication after taking it orally, which requires a period of time, not immediately after taking progesterone. It is recommended that you can observe and wait patiently, do not be overly worried and anxious, because anxiety, worry and endocrine hormone problems may cause the delay of menstruation, as long as it comes within 7-10 days, it is It is a normal phenomenon. In the future, if menstrual disorders occur frequently, check the endocrine hormones on an empty stomach on the second to fifth day of menstruation to determine whether there is any abnormality in the hormone level, and according to the situation, carry out artificial cycle regulation, for example, supplementation with progesterone or short-acting contraceptive drugs, which can achieve the purpose of regulating menstruation, and then stop taking them orally for three months to observe the effect of drug treatment.