After a normal miscarriage, hormone levels do not suddenly drop to a non-pregnant state, so pregnancy reactions may still occur. Simply based on the current state of pregnancy reactions, it is not possible to accurately judge the developmental condition of the embryo in the uterine cavity. It is still necessary to undergo regular prenatal checks after becoming pregnant and monitor the development of the embryo in the uterine cavity via ultrasound. If the embryo has already stopped developing, it is necessary to seek medical treatment for an abortion in a timely manner to avoid causing disorders in the body's coagulation function.