The time of the end of early pregnancy reaction varies from person to person, usually women with regular menstrual cycle start to have obvious early pregnancy reaction in 5-6 weeks after menopause, and the symptoms can be relieved in 10-12 weeks after menopause, that is, early pregnancy reaction can gradually disappear in about 3 months. However, in some cases, the early pregnancy reaction lasts longer, even up to 4-5 months, or even until delivery. The time of onset of pregnancy vomiting varies from pregnancy to pregnancy, and the time frame for the end of pregnancy vomiting also varies. Usually, around 6 weeks after menopause, pregnant women may experience nausea, vomiting, drowsiness, morning sickness and aversion to oil, which is called early pregnancy reaction. At about 12 weeks of menopause, i.e. about 3 months of pregnancy, the reactions can gradually disappear. Some pregnant women have no vomiting in the early stage of pregnancy, but vomiting occurs in the middle of pregnancy, and the end time is relatively late. This phenomenon is mainly due to the change of hormone level and the rise of chorionic gonadotropin in pregnant women, and most of them do not need special treatment. In case of severe early pregnancy reaction, i.e. severe pregnancy vomiting, it is recommended to take appropriate rehydration and vitamin B6 supplements to help improve the symptoms.