Most pregnant women experience pregnancy reactions between 40 days and 3 months of pregnancy, usually the most severe during 8-12 weeks of pregnancy. Most of the symptoms are nausea, vomiting, loss of appetite, drowsiness and fatigue. The level of human chorionic gonadotropin in pregnant women reaches its peak between 8 and 12 weeks of gestation, and after 12 weeks of gestation, the level of human chorionic gonadotropin in pregnant women gradually decreases, therefore, the early pregnancy reaction is most serious between 8 and 12 weeks of gestation. When early pregnancy reaction occurs, pregnant women can eat a light diet and adopt the method of eating less and more meals to ensure that they take in enough nutrients. In addition, if the early pregnancy reaction is serious, you should pay attention to rest and do not eat fatty food. If necessary, vitamin B6 can be taken under the guidance of obstetricians to relieve vomiting and avoid electrolyte disorders.