A little bleeding in 8 weeks of pregnancy may be caused by preeclampsia, ectopic pregnancy, fetal abruption or gynecological diseases. 1. Pre-eclampsia. Early pregnancy embryo is still small and unstable, due to trauma or exertion, coitus and other stimuli can easily cause miscarriage phenomenon, 8 weeks pregnant vaginal bleeding may be a sign of miscarriage, need to go to the hospital to do ultrasound and progesterone test, give progesterone birth control treatment, pay attention to follow up. 2. Ectopic pregnancy. Bleeding at 8 weeks of pregnancy may also be caused by rupture of the embryo after it has settled outside the uterine cavity, usually with symptoms such as abdominal pain and vaginal bleeding. It can be clarified with blood HCG and ultrasound, and be treated conservatively with mifepristone and methotrexate tablets under doctor’s guidance, or be treated with surgery as soon as possible. 3. Fetal arrest. Bleeding at 8 weeks of pregnancy may also be caused by the embryo stopping developing due to poor embryonic development or chromosomal abnormality, maternal diseases and other factors. Combined with the ultrasound examination, if it is caused by the fetal arrest, it is necessary to terminate the pregnancy in time. 4. Gynecological diseases. Bleeding in early pregnancy may be caused by cervicitis, cervical polyps or acute vaginitis, etc., which may cause irregular bleeding due to inflammation and stimulation of mucous membrane tissue, and it is also necessary to be alert to irregular bleeding caused by cervical cancer. Combined with gynecological examination and colposcopy, the cause and location of bleeding should be clarified and treated.