HCG is doubled every other day. Pregnant women can determine if they are pregnant by testing their blood for HCG levels early in the pregnancy. HCG levels in the body will double every other day after pregnancy, and after reaching a peak at 10 to 12 weeks of pregnancy, HCG will naturally return to a moderate level and remain there until after delivery. In the early stages of pregnancy, by observing the changes in HCG, it is possible to find out whether the embryo is developing normally or not. If HCG can double every other day, then the development of the child is generally normal, basically can rule out the possibility of embryonic dysplasia and ectopic pregnancy. Pay attention to rest during pregnancy, avoid labor and exposure to toxic and radioactive substances, and consult a doctor in time if you feel unwell.