Every time the weather changes, my stomach swells and I fart. What's the matter?

Hello, my abdomen is swollen or full of discomfort. It can be a subjective feeling that a part of the abdomen or the whole abdomen is full, usually accompanied by related symptoms, such as vomiting, diarrhea, belching and so on. Can also be an objective examination, found that part or all of the abdomen swelling. Abdominal distension is a common symptom of digestive system, which is mainly caused by flatulence in gastrointestinal tract, ascites caused by various reasons and abdominal tumors.