The belly like a few months pregnant big may be pregnant, abdominal fat increase, disease and other reasons, as soon as possible to consult the doctor, the cause of treatment. 1. pregnancy: regular menstruation and sexual life of women with a belly like a few months pregnant, and have a history of menopause need to first determine whether the pregnancy, you can go to the hospital through the ultrasound and blood HCG test to clearly diagnose, according to the situation of the fetus and their own wishes to decide to deal with the way. 2. Increased abdominal fat: increased abdominal fat can also make the stomach look like a few months pregnant, except for organic diseases. In addition, you should pay attention to the diet control, with sports and exercise, you can lose abdominal fat. 3. Diseases: Cirrhosis, malignant tumors and other diseases may be accompanied by ascites or abdominal masses, resulting in the stomach like a few months pregnant, it is recommended to consult a doctor in a timely manner, and actively treat the original disease. The stomach is like the size of a few months of pregnancy, timely medical treatment, active treatment.