Early pregnancy bloating has the following reasons: 1, the hormone levels in early pregnancy will change, the body’s estrogen secretion will increase a lot, the peristaltic ability of the stomach and intestines will be reduced, the secretion of gastric acid will be reduced, so the digestive ability will be reduced, the gastrointestinal food will be long stagnation, and the reaction of harmful bacteria will produce a lot of gas, which will lead to flatulence, the majority of people will be relieved in a few months. 2, after pregnancy the uterus will continue to grow larger, will press the gastric, the gastric will be easy to slow down, so it will lead to the stomach. After pregnancy, the uterus will continue to get bigger and bigger, which will compress the intestines and stomach, and the intestines and stomach will be easy to slow down peristalsis, so it will lead to flatulence.3. Pregnant women themselves suffer from gastrointestinal diseases, such as gastritis, gastric ulcers, duodenal ulcers and so on, which will lead to flatulence.4. Improper diet, such as eating potatoes, beans and other foods, the stomach will produce a lot of gas, which will lead to flatulence. Flatulence.