You will not have another period after pregnancy. After pregnancy, with the increase of hormone level, the endometrium will be thicker than usual, but there will be no shedding, and there is the development of pregnancy sac in the uterine cavity. The hormone level in the body will also change after pregnancy, some of them will cause pregnancy reaction and the performance is different, some of them show breast pain, some show nausea, vomiting, weakness, dizziness, drowsiness and other symptoms, half of the women do not feel anything. Normally, there will be no more menstruation. If there is a lot of vaginal bleeding after pregnancy, it is an abnormal manifestation and further examination is needed to see if pre-miscarriage or spontaneous abortion occurs. If menstruation is normal after sex, pregnancy can be ruled out and women should take folic acid supplements during the preparation period as well as during the first trimester of pregnancy.