Pregnant women do not usually feel nausea when they are 10 days pregnant. The reaction to pregnancy vomiting is most often seen around 5-6 weeks after pregnancy, there are individual differences and each person appears at a slightly different time. At around 10 days of pregnancy, the embryo is in the uterine cavity for a shorter period of time, and the trophoblast cells secrete low levels of human chorionic gonadotropin, which has a lesser impact on the body. Therefore, pregnant women do not feel nausea. Under normal circumstances, at 5-6 weeks of pregnancy, pregnant women will experience morning nausea, vomiting and other gastrointestinal discomforts, which is a normal early pregnancy reaction. However, if nausea occurs on the 10th day of pregnancy, it is mostly considered that the pregnant woman has gastrointestinal diseases or other diseases such as liver, which need to be examined in detail in the hospital, but try to avoid the examination that affects the development of the embryo, such as chest X-ray. Pregnant women should usually pay attention to relaxation, do not have too much psychological pressure, avoid greasy, cold, spicy and stimulating food, eat more fresh vegetables and fruits.