8 weeks of bleeding brown stuff, consider a small amount of vaginal bleeding at 8 weeks of pregnancy, may be a pre-eclampsia, ectopic pregnancy, staphylococcus and so on. 1. Pre-eclampsia: Pre-eclampsia refers to a small amount of vaginal bleeding before the 28th week of pregnancy due to embryonic factors or maternal or paternal factors, usually accompanied by bouts of abdominal pain. 2. Ectopic pregnancy: Ectopic pregnancy is the development of fertilized eggs in the uterus outside the body cavity of the bed, the more common is tubal pregnancy, with the growth of the gestational sac will lead to the rupture of the fallopian tubes, resulting in bleeding phenomenon, usually also have abdominal pain. 3. Gravidas: Gravidas is a benign gestational trophoblastic disease, a rare abnormal pregnancy, and chromosomal abnormalities have a relationship, the main manifestation is postmenopausal vaginal bleeding, usually around 8-12 weeks after the menopause, began to appear irregular vaginal bleeding. It is not normal to bleed brown in 8 weeks of pregnancy, and there is also the possibility that it is caused by gynecological diseases such as cervical polyps, and when the symptom occurs, you should go to the hospital in time to have a checkup, and treat the symptoms according to the cause to avoid the danger of occurring.