Endometrium 10mm and still no menstruation, may be due to pregnancy, endocrine diseases, mental factors and other reasons. 1. pregnancy: for women who have sex without effective contraception, endometrium 10mm, menstruation has not come, there is a possibility of pregnancy. 2. Endocrine diseases: when suffering from polycystic ovary syndrome, hyperprolactinemia, thyroid dysfunction, premature ovarian failure and other endocrine diseases, may also lead to endometrium 10mm, no menstruation phenomenon. 3. Mental factors: some women have too much mental tension, excessive work pressure, etc., may also have an impact on the body’s hormone levels, the phenomenon of not menstruating. The endometrium 10mm, not menstruation, it is recommended to go to the hospital in a timely manner, after the doctor’s interview with the relevant items of the examination, to clarify the specific causes of the disease, and then follow the doctor’s instructions to the cause of the treatment.