After you do the above #1 thru #5, if you don't get any better, you might consider having a test called a Heidelberg Gastrogram (google this). I would.
I wish you would have written whether you have had any tests and what they have showed. I'm a nutritionist and I'm going to assume you have this excessive gas and have no idea why or what to do about it. Here is what I would suggest you do (in this order)...1. Make sure your eating a healthy diet. Lots of whole grains, fresh vegetables, fruits, nuts, etc. 2. Make sure your bowels are moving regularly. That means you should have 1 large bowel movement every single day (some doctors say you don't need to have a bowel movement every day BUT THEY ARE WRONG!) 3. Take a probiotic. Try Activia. You get it at the grocery store. Eat one little container every day. It will help keep you regular and also help with the gas. 4. Buy Activated Charcoal tablets from the drug store. When you get the gas, take two or three. If the gas is really bad and really painful you may need to take up to five at a time. 5. If you do all of this and your no better, go and see a Gastroenterologist. If he runs tests and finds nothing, go see a Holistic Doctor and have him test you for yeast and low hydrochloric acid production. Good Luck!