Effect of distance between inferior margin of placenta and internal cervical orifice

During pregnancy, the lower edge of the placenta should not be less than 5cm away from the internal opening of the cervix. If it is less than 5cm, it belongs to the low position of the placenta. If there is a possibility of moving up before 28 weeks of pregnancy, try to stay in bed and do not exercise violently. You can put the hips high in an appropriate amount, which is conducive to the position of the placenta moving up. After 28 weeks, the position of the placenta is basically fixed, and the low position will easily cause bleeding. If there is a cohabitation or excessive exercise, it will easily cause bleeding. If there is regular bleeding, it may easily cause anemia in pregnant women and affect the growth of the fetus. During this period, if there is a cohabitation or excessive exercise, it may show the possibility of massive bleeding at any time. In the process of baby birth, it will also affect natural birth, if natural birth may cause placenta detachment, causing the risk of massive bleeding.