Two months without menstrual period and no pregnancy may be caused by endocrine disorders, premature ovarian failure, organic lesions and damage to the endometrium and other factors, as follows: 1. Endocrine disorders: recent excessive life and mental stress or taking birth control pills, overwork, weight loss and environmental changes can cause hormone level disorders in the body, affecting the lack of menstruation. 2. Premature ovarian failure: unhealthy living habits, ovarian diseases, genetic factors and other reasons, resulting in premature decline in ovarian function, affecting menstruation. 3. Organic lesions: uterine tumors, pelvic tuberculosis, endometrial tuberculosis and other diseases can cause delayed menstruation. 4. Damaged endometrium: damaged and thin endometrium after abortion or cervical adhesion, cervical canal adhesion and so on can also lead to the lack of menstruation. It should be reminded that the reasons for not having a period for two months and not being pregnant are more complicated, and it is recommended that you go to the hospital in time to get a clear picture of the cause of the problem and then give targeted treatment.