There are many reasons for bleeding in early pregnancy, which may be caused by the implantation of the fertilized egg, or due to a prior miscarriage, ectopic pregnancy, cervicitis and other diseases. 1. Fertilized egg implantation: some women will experience a small amount of vaginal bleeding when they first become pregnant, which is considered to be caused by the implantation of the fertilized egg, which is a normal condition related to hormonal changes in the body, and generally does not cause other symptoms. 2. Pre-eclampsia: Pre-eclampsia occurs before the 28th week of pregnancy, and it is associated with a small amount of vaginal bleeding, abdominal pain, etc. It is mostly related to the embryo, the mother, the father, and environmental factors. 3. Ectopic pregnancy: Ectopic pregnancy refers to the fertilization of the egg in the uterine cavity in the body of the external parts of the bed, the common cause of fallopian tube lesions, the typical symptoms of menopause, abdominal pain, vaginal bleeding. 4. Cervicitis: Cervicitis is an inflammation of the cervical-vaginal part of the uterus and the mucous membrane of the cervical canal, which is mostly related to pathogen infections, and the patient will have symptoms such as increased vaginal discharge and abnormal vaginal bleeding. If you have cervicitis during pregnancy, you may experience vaginal bleeding in early pregnancy. In addition, other factors may also lead to bleeding in early pregnancy, if discomfort occurs during pregnancy, it is recommended to go to the hospital in a timely manner for examination, to clarify the cause of the disease, and then follow the doctor’s instructions to deal with the treatment.