Pregnancy vomiting reactions may occur in the first month of pregnancy, but there is some individual variability and no uniform standard. Most women begin to experience early pregnancy reactions, such as vomiting and loss of appetite, around 40 days after menopause, mainly due to the increase in chorionic gonadotropin level, and the sensitivity of each pregnant woman to this change varies, so the time of appearance may be early or late, and the severity of pregnancy vomiting also varies greatly. Some pregnant women may be more sensitive and may experience vomiting in the first month of pregnancy, while some may experience vomiting later or even not at all. Pregnant women should pay attention to relaxation, eat reasonably and avoid spicy, cold, greasy and irritating food. When vomiting occurs, you should pay attention to drink more warm water and eat a light diet, the symptoms will gradually ease.