Pregnant women’s stomach bloating may be caused by changes in hormone levels in the body, uterine compression, indigestion and other reasons. 1. Changes in hormone levels: After pregnancy, the hormone levels in the female body will change, such as blood HCG, progesterone levels gradually increase, the role of protecting the embryo at the same time will inhibit the uterus contraction, but also inhibit the contraction of other parts of the body’s muscles, for example, the contraction of gastrointestinal muscles slow down gastrointestinal peristalsis slows down, affecting the digestive function, the performance of the bloated stomach. 2. Uterine compression: after pregnancy, with the continuous growth and development of the fetus, the uterus will also gradually grow, the surrounding soft tissues caused by pressure, pregnant women will have a bloated stomach. 3. Indigestion: indigestion after overeating and cold stimulating diets after pregnancy leads to intestinal flora disorders and intestinal wall produces more gas, pregnant women will have a bloated stomach. Pregnant women with bloating accompanied by other symptoms of discomfort, such as abdominal pain, diarrhea, constipation, serious cases are recommended to seek timely medical attention.