How do you know if it's a miscarriage or menstruation?

Can be judged by bleeding time, bleeding volume, symptoms, blood hCG detection, ultrasound examination and other aspects to determine abortion or menstruation. 1. Bleeding time Menstruation usually has a more regular cycle, in the expected time; and abortion bleeding time may not be regular, especially for a history of menopause after bleeding. If the menstrual cycle has been regular, suddenly delayed bleeding, need to be alert to abortion may. 2. Amount of bleeding The amount of bleeding during menstruation is generally moderate and has a certain regularity; the amount of bleeding during abortion may vary from person to person, and sometimes it may be more, even accompanied by blood clots, etc. But this is not an absolute criterion for distinguishing, because menstruation There may also be changes in volume. 3. Symptoms: In addition to bleeding, abortion may be accompanied by lower abdominal pain, the pain may be severe, and there may be tissue discharge such as pregnancy sac; there may be discomfort such as abdominal distension during menstruation, but usually the pain is relatively mild, and there is less tissue discharge. 4. Blood hCG detection By detecting the level of chorionic gonadotropin (hCG) in the blood, if the obvious increase indicates pregnancy, bleeding is likely to be abortion; if hCG is in the normal range, it is more likely to be menstruation. 5. Ultrasound examination can observe whether there is a gestational sac in the uterus. If ultrasound finds a gestational sac and bleeding occurs later, abortion is considered. If there is no abnormality in the uterus, it is mostly menstruation. However, sometimes in the early stage ultrasound examination may not be clear. It should be noted that it is sometimes difficult to accurately judge by symptoms alone, especially for some complex situations, timely medical treatment, relevant examinations and professional evaluation of doctors should be carried out in order to clarify the cause and take corresponding measures.