More gas is a reaction of early pregnancy, because the progesterone in the body of pregnant women in early pregnancy increases significantly, causing gastrointestinal peristalsis to weaken, resulting in flatulence, so pregnant women have frequent gas reactions, more gas may also be caused by the following reasons: 1, if pregnant women eat more difficult to digest or flatulent food, there will be frequent gas phenomenon, such as bacterial fermentation to form gas food, common sweet potatoes, fructose The pregnant women want to reduce the phenomenon of exhaust, you can try to avoid the easy flatulence of food; 2, if pregnant women suffer from some kind of gastrointestinal disease, will also lead to more exhaust symptoms, such as gastroenteritis, gastric ulcer, these diseases are often accompanied by abdominal pain, diarrhea and other symptoms; 3, pregnant women who have poor eating habits and eating too fast, may also lead to more exhaust.