The menstruation does not mean that you are not pregnant, but you may also be pregnant, and you cannot judge whether you are pregnant simply by bleeding: 1. Many women will have bleeding symptoms after pregnancy, mainly due to the fertilized egg being laid or the bleeding caused by pre-eclampsia, which is more similar to the symptoms of menstruation, so it may also be judged as the arrival of menstruation. If the bleeding is low and accompanied by abdominal pain, it is best to go to the hospital in time to check if there is a pregnancy. 2. If it is a normal menstrual flow, and the bleeding is high, no difference in color from the previous one, and there are no other abnormal manifestations in the body, it indicates that there is no pregnancy. Therefore, women should pay attention to observe the physical symptoms when bleeding and determine whether there is a pregnancy in time to avoid miscarriage problems.