Early pregnancy reaction disappears at 10 weeks of pregnancy, some pregnant women are normal phenomenon, but there are also some pregnant women is the embryo stops developing and other abnormalities lead to. 1. Normal situation: the symptoms of early pregnancy reaction exists a relatively large individual differences, some pregnant women early pregnancy reaction lasts only a few days, some are the reaction of one or two months, and some may continue to the late stage of pregnancy. So some pregnant women in 10 weeks of pregnancy early pregnancy reaction disappeared, and the development of the fetus is good is a normal phenomenon. 2. Abnormal situation: some pregnant women after the cessation of fetal development, the body’s hormone levels will change, including HCG will decline, some will be manifested in the disappearance of early pregnancy reaction. In particular, pregnant women with vaginal bleeding or obvious abdominal pain should be alert to the cessation of fetal development, and need to be actively examined.