You could be sensitive to wheat, be lactose intolerant, eating raw vegetables that aren't able to break down in your intestines because of a lack of enzymes, you could have IBS (irritable bowel syndrome), ulcerative colitis, you could be stressed and hurried when you eat, be fructose intolerant, or have colon sensitivities because of the effects of coffee on the colon track. One solution other than not eating certain foods to see if this helps with your stomach bloating, is to go to a health food store to purchase a digestive enzyme. This helps many people.