I would suggest that you get a pH diagnostic test, pH Gastrogram test, or pH capsule test. The symptoms you are indicating are common occurrences with three disorders. Hyperchlorhydria (excess acid production), Hypochlorhydria (weak stomach acid), Achlorhydria (no stomach acid). The symptoms of all three of these conditions are as follows: gas, diarrhea and/or constipation, gastroparesis, belching, bloating, abdominal pain, reflux, nausea, headaches, swelling of the lips, tongue, etc. No one will have all of the symptoms at the same time. Most people will have two or three symptoms, usually diarrhea and/or constipation, motility and gas. If you digestive system is out of balance, the stage is set for Candida and other bacteria infections. A pH diagnostic test will correct the unbalanced condition and keep Candida from reoccurring.