The blood HCG value on the 50th day of pregnancy will vary from person to person, and the normal range should be between 15,000U/L – 20,000U/L. If the blood HCG value is low, it may affect the normal development of the fetus and can be treated with intramuscular injection of human chorionic gonadotropin. If the blood HCG value is too high, it may be the possibility of twin fetuses or gravidas, you can do ultrasound examination to finally diagnose the development of the embryo, you need to take the results of the ultrasound examination as the basis for the blood HCG as a reference. If you do ultrasound on the 50th day of pregnancy, the embryo should have a fetal heart and buds, the size of the buds should be around 8mm, and the ultrasound examination can exclude the possibility of gravidas and twin fetuses. Before 50 days of pregnancy, the blood HCG value should appear to double every other day, after 50 days of pregnancy, some people’s blood HCG will reach the peak, and no longer continue to grow at the rate of doubling every other day, you can do ultrasound examination regularly.