Flatulence in pregnancy usually disappears at about 12 weeks of pregnancy, but there are individual differences. After pregnancy, due to changes in hormone levels in the body, most pregnant women will experience nausea, vomiting, anorexia, fatigue, flatulence and other symptoms of early pregnancy reactions around 6 weeks after menopause, and such symptoms will usually disappear on their own at around 12 weeks of pregnancy. However, the time for the early pregnancy reaction to appear and disappear, and the severity of the symptoms vary from person to person. During early pregnancy, women should rest appropriately, get enough sleep, avoid strenuous exercise and exertion, and stay in a happy mood. Early pregnancy should continue to follow the doctor’s advice to take folic acid, but also according to the early pregnancy reaction can be adjusted diet. Although the early pregnancy reaction is a normal physiological phenomenon after pregnancy, but if the early pregnancy reaction is too intense or lasts too long, should consult a doctor in time, so as not to affect the physical and mental health of the pregnant woman as well as the development of the fetus.