If you have not had a period for 2 months, and if you have a normal sexual life and do not use contraception, it is recommended to collect morning urine for an early pregnancy test to rule out the possibility of pregnancy. If you are not pregnant, the vast majority of cases are caused by endocrine disorders. For example, frequent late nights, insomnia, emotional changes, environmental changes, cold stimulation or emotional shock may cause endocrine disorders and make menstruation not occur. In this case, you can take progesterone orally to induce menstruation, and most patients will have their periods in 3-7 days after stopping the medication. To rule out the possibility of premature ovarian failure, it is recommended to have a blood test for sex hormone 6 after taking progesterone and still no menstruation on the 8th day of discontinuation.