If you have regular menstruation and suddenly do not have menstruation for a month, and if you have normal sexual life, clinically you can exclude the possibility of pregnancy. It is recommended to collect morning urine for early pregnancy test. If pregnancy has been ruled out, the most common reason is menopause caused by endocrine disorder, it is recommended to take progesterone orally to promote menstruation, once a day, two capsules at a time, for 3 days, and menstruation will come 3-7 days after stopping the medicine. Since progesterone itself can cause dizziness, it is best to take it orally at night before going to bed. If you don’t get your period on the 8th day after stopping the medication, you must pay high attention to it and suggest going to the hospital for examination to exclude other organic pathologies such as premature ovarian failure.