Nausea after drinking water after pregnancy may be related to early pregnancy reaction, may also be late pregnancy uterus enlargement, oppression of the stomach and intestines caused by the following situations: First, early pregnancy: 1, early pregnancy reaction: due to the female pregnancy hormone level changes in the body is obvious, nausea, vomiting, such as early pregnancy reaction is heavier, the gastrointestinal tract reacts to the sensitive, it will feel that the water has a strange taste, nausea, want to vomit feeling. Through the patient’s own conditioning, the above symptoms can be gradually disappeared in about 3 months of pregnancy; 2, electrolyte disorders: women consciously bloating, not accustomed to the quality of the water or not itself lack of water and so on nausea, women who are pregnant, if the early pregnancy reaction is heavier, can not just drink water, so as not to lead to the occurrence of electrolyte disorders. You can eat some salty food and then drink water, may not appear nausea reaction. Second, late pregnancy: if the patient is in late pregnancy, the uterus increases in size and presses the gastrointestinal tract, affecting gastrointestinal peristalsis, which will cause physiological nausea, this symptom will be slowly eliminated after the birth of the fetus.