Most patients begin to experience early pregnancy reactions, such as nausea, vomiting, fatigue and drowsiness, about 40 days after pregnancy. They gradually worsen after pregnancy, peak at about two months, and gradually start again from about two months, and these symptoms basically disappear at about three months. The changes are mainly similar to the change curve of blood chorionic gonadotropin in women’s body, so it is considered that women’s early pregnancy vomiting reaction is mainly related to the patient’s blood chorionic gonadotropin level. However, there are some women who may not have any early pregnancy reaction after pregnancy. In some cases, symptoms such as morning sickness or nausea and fatigue last throughout the patient’s pregnancy. So there is also a dependency on the patient’s body type as to when the patient’s pregnancy reaction ends.