It is normal for early pregnancy reactions such as nausea, vomiting, breast tenderness, weakness and drowsiness to be reduced at 11 weeks of pregnancy. For most women, the early pregnancy reaction will reach its peak around 10 weeks of pregnancy, and after 10 weeks, the early pregnancy reaction of patients will gradually decrease, and the early pregnancy reaction will mostly disappear around 12 weeks. The early pregnancy reactions are mainly related to the increase of chorionic gonadotropin and progesterone after pregnancy. The chorionic gonadotropin level peaks around the second month of pregnancy, and after the peak is reached and stabilized, the patient’s pregnancy sickness will gradually stabilize. In the third month of pregnancy, the placenta is formed, so the early pregnancy reaction will gradually decrease and disappear. However, there are some special cases in which the early pregnancy reaction may persist throughout the pregnancy. This is because early pregnancy reactions are related to hormone levels, but also to a woman’s physical condition and whether she has stomach problems, whether she has H. pylori infection in the stomach, etc. Many factors are involved.