You will not have a period after pregnancy. This is because after pregnancy the ovaries will not ovulate for a while and will have to maintain stable hormone levels to ensure the success of the pregnancy. Therefore, there is no menstruation during pregnancy, except in the rare case of a double uterus, in which a small percentage of women with a double uterus do not have a period during pregnancy. The other side of the uterus, which is not pregnant, will still have a small amount of menstrual blood each month, but this is a rare occurrence. Any pregnant woman who experiences bleeding during pregnancy is not menstruating. It is usually considered to be due to preterm miscarriage. The fetus is unstable or the placenta is in a low position. For abnormal vaginal bleeding, it is recommended to go to the hospital for examination and, if necessary, hospitalization for fetal preservation.