There is no such thing as how much bleeding is normal in early pregnancy, and early pregnancy bleeding is not normal. Bleeding in early pregnancy may be caused by cervical polyps, ectopic pregnancy, hyperemesis gravidarum, or other diseases such as cervical cancer, which requires timely medical attention. 1. Cervical polyps: The cause of cervical polyps is still unclear, mostly due to chronic inflammation and cervical infection. Patients will have abnormal vaginal bleeding, leukorrhea, vaginal opening foreign body and other symptoms, so the patient will have early pregnancy bleeding phenomenon. 2. Ectopic pregnancy:Most of the ectopic pregnancies are caused by tubalitis or tubal developmental malformation, etc. Patients will have vaginal bleeding, abdominal pain and other manifestations. As a result, patients will have symptoms of bleeding in early pregnancy. 3.Grape fetus:Grape fetus is mostly formed due to the development of fertilized egg, the main symptoms of patients are vaginal bleeding, abdominal pain, uterus abnormally enlarged and softened, etc., so the patients will have early pregnancy bleeding performance. 4. Others:Cervical cancer, endometrial cancer, vaginitis and other diseases can also lead to early pregnancy bleeding. Therefore, when patients have symptoms of early pregnancy bleeding, they should consult doctor in time to find out the cause of the disease and follow the doctor’s instruction.