Early pregnancy may have no obvious manifestations. Some pregnant women may have reactions such as breast changes, nausea and vomiting, and elevated basal body temperature. 1. Breast changes: changes in hormone levels after pregnancy can be manifested in breast enlargement, swelling and pain, and deepening of areola color. 2. Nausea and vomiting: there may be loss of appetite, aversion to grease, it is recommended to eat a small amount of food, avoid eating greasy, spicy stimulation or cold food, it is advisable to eat light, easy to digest food, and pay attention to whether the nutrients are supplemented, the specific diet should be based on the individual situation of pregnant women to decide. 3. After pregnancy, the basal body temperature will rise 0.3-0.5℃, which is normal. Don’t have too much psychological pressure in the early stage of pregnancy, keep a good state of mind, and have regular checkups.