Vaginal bleeding in pregnancy may be ectopic pregnancy, miscarriage, placenta praevia, preterm labor and so on.
1. Ectopic pregnancy: the fertilized egg is deposited in a place other than the uterine cavity such as fallopian tube, cervix, abdominal cavity, etc., the embryo can not grow normally and cause local damage, causing irregular vaginal bleeding, which usually occurs in the early stage of pregnancy, accompanied by abdominal pain.
2. Miscarriage: Miscarriage may be caused by chromosomal abnormalities of the embryo or fetus, systemic infection of the mother or uterine malformation. Early miscarriage is usually characterized by vaginal bleeding, while late miscarriage usually starts with abdominal pain followed by vaginal bleeding.
3. Placenta praevia: After 28 weeks of pregnancy, the placenta is lower than the prenatal part of the fetus, attached to the lower part of the uterus, the lower edge of the uterus reaches or covers the cervical os, which is called placenta praevia. Typical symptoms are repeated vaginal bleeding without cause and painless in late pregnancy or after delivery.
Vaginal bleeding in pregnancy may also be hyperemesis gravidarum, placenta previa, preterm labor, etc. Pregnant women are advised to consult a doctor in time to clarify the cause of the disease and standardize the treatment in time.