A woman’s belly is not 100% caused by pregnancy, but also due to the recent excessive intake of nutrients, resulting in the deposition of abdominal fat caused by physiological manifestations. It can also be caused by other organic diseases, such as common pelvic tumors, or other malignant tumors, such as ovarian cancer, intestinal tumors and so on. If pregnancy causes the abdomen to become bigger, after 3 months of menopause, the uterus increases significantly more than the pelvis, thus causing the abdomen to protrude and become bigger, in the first 3 months of pregnancy will not be due to pregnancy causes the abdomen to become bigger.