Brown discharge in the early stages of pregnancy without lower abdominal pain can be a result of preterm miscarriage, embryonic arrest or ectopic pregnancy, gravida, or biochemical pregnancy. At this time, you need to go to the hospital for an ultrasound to check the blood for chorionic gonadotropin. If the ultrasound reveals a normal gestational sac in the uterine cavity and a fetal heart and germ can be seen, and there is vaginal bleeding, it may be caused by preterm miscarriage or cervical polyps or cervical inflammation, which should be treated actively. If by the 50th day of pregnancy, the fetal heart and buds are still not visible, the embryo has stopped developing. If there is no normal development of HCG in the blood check, it may be a biochemical pregnancy, or it may be caused by ectopic pregnancy.