Menstruation does not occur in early pregnancy. Menopause is an important indicator of pregnancy; menstruation will not occur after pregnancy, but there may be vaginal bleeding. After the fertilized egg is formed, it will be deposited in the uterus and hormonal changes will occur in the pregnant woman’s body, and the ovaries will not ovulate again. As a result, menstrual periods will no longer occur in the early stages of normal pregnancy. Usually, women go to the hospital for an early pregnancy test because of menopause. If there is vaginal bleeding in the early stages of pregnancy, it is usually not caused by menstruation, and at this time, we should be alert to the problems of preeclampsia and ectopic pregnancy. In addition, some women may also experience a small amount of vaginal bleeding when the fertilized egg is deposited, which requires differential diagnosis. Women who experience “menstrual” symptoms after pregnancy should go to the hospital for an examination. If there is a miscarriage, you should actively cooperate with the doctor to protect the fetus, and at the same time pay attention to rest. In case of ectopic pregnancy, early surgery or medication should be taken.