The endometrium is 12 millimeters thick, and the blood droplets keep on dropping. Except for the premise of pregnancy, you can use medication under the guidance of a doctor for treatment, and diagnostic scraping to do pathological examination if necessary; if it is a pre-eclampsia or ectopic pregnancy, it needs to be treated with fertility preservation or surgical treatment. The reason why women have menstruation is mainly due to the change of hormone level in the body, which causes the endometrium to fall off and then the bleeding occurs. Now the uterine lining is 12 millimeters, and the drops are always flowing, you can use some medicines under the doctor’s guidance, for example, you can take dextroprogesterone or progesterone, or you can inject progesterone injection and so on, to promote the shedding of the uterine lining. However, withdrawal bleeding occurs 3 to 7 days after stopping the medication. In women with a history of sexual intercourse who experience this symptom, diagnostic curettage for pathologic examination is usually recommended to rule out endometrial pathology. Women who are sexually active with this symptom should also be checked first to see if they are pregnant, as it is important to rule out preeclampsia or ectopic pregnancy. If it is a pre-eclampsia, rest or medication is recommended; if it is an ectopic pregnancy, hospitalization is recommended.