Fresh blood in 8 weeks of pregnancy may be due to miscarriage and ectopic pregnancy. 1. Miscarriage: miscarriage at 8 weeks of pregnancy belongs to early miscarriage, and the common causes are chromosomal abnormality of the embryo and endocrine abnormality of the mother. Clinical manifestations are postmenopausal vaginal bleeding and abdominal pain. Miscarriage at 8 weeks of pregnancy is often preceded by vaginal bleeding and followed by abdominal pain. 2. Ectopic pregnancy: the fertilized egg in the uterine body cavity outside the bed is called ectopic pregnancy, the fallopian tube pot belly pregnancy is more common. Bleeding in the 8th week of pregnancy may be a tubal pregnancy abortion, manifested by menopause, abdominal pain, bleeding, and even fainting and shock. Vaginal ultrasonography can diagnose tubal pregnancy. Therefore, if you find bleeding in the 8th week of pregnancy, you should go to the hospital in time, under the guidance of the doctor, and if necessary, terminate the pregnancy.