Early pregnancy reactions such as vomiting will occur around seven weeks after pregnancy, mainly due to gastrointestinal symptoms caused by changes in hormone levels in the organism, mainly nausea, vomiting, anorexia and other discomforts, lasting for about a month after the symptoms can be gradually relieved, and most of the women in the third trimester of pregnancy the symptoms will gradually be relieved. A very small number of women may last until delivery, and some women with severe early pregnancy reactions may experience serious water and electrolyte disorders, or even severe malnutrition, which may affect the growth and development of the fetus and require fluid therapy, or even abortion. Usually pay attention to a small number of meals, can effectively ease the early pregnancy reaction, try to avoid eating too greasy food, dietary choice of light, easy to digest food, pay attention to more rest during pregnancy, avoid strenuous exercise.