If the HCG value does not double significantly or decreases, it indicates abnormal embryonic development. Combined with pelvic ultrasound, if the shape of the gestational sac is not full, does not correspond to the month of menopause or the fetal heartbeat disappears, it indicates embryonic abortion. Some women do not have obvious symptoms of pre-eclampsia, but the early pregnancy response suddenly decreases or disappears, the blood HCG value drops, and the ultrasound shows no fetal heartbeat, which indicates embryonic abortion. If vaginal bleeding and lower abdominal pain occur during early pregnancy, you need to go to the hospital for examination to check the development of embryo in time. After the embryonic abortion, you need to scrape the uterus in time to avoid bleeding and intrauterine infection, and you need to use anti-inflammatory drugs such as cephalosporin reasonably after the operation to prevent infection.