Pregnancy sickness may occur on the 40th day of pregnancy. Whether pregnancy vomiting occurs on the 40th day of pregnancy is mainly related to the physical quality of pregnant women with individual differences. In the early stages of pregnancy, generally 5-6 weeks of pregnancy, i.e., 35-42 days, due to the rise in the levels of estrogen, progesterone and HCG in the body, the vast majority of pregnant women, due to the body’s sensitivity, will begin to experience symptoms of pregnancy vomiting, which is a normal pregnancy reaction. Due to the influence of individual differences, a few pregnant women will not appear in 40 days of pregnancy vomiting, and even to the end of pregnancy will not appear vomiting, as long as the other indicators are normal, even if the vomiting does not occur, it is also a normal phenomenon. Generally speaking, the vomiting gradually decreases after 8 weeks of pregnancy and basically disappears after 12 weeks. During this period, pregnant women should pay attention to maintaining a relaxed mood and eating more fresh vegetables and fruits. If the number of times of pregnancy vomiting is high, you can take less food and eat more meals. A small number of pregnant women may experience severe pregnancy vomiting, or even unable to eat, if necessary, consult a doctor for infusion treatment.