Hello Jim, I've been scanning this website and it seems that many of the people on here are going through what my younger sister is. It sounds like you are going through what her boyfriend is. I saw a clip of Dr. Oz, and he was showing how yeast reacts in the body. It appears to be an extremely major source of gas, pain and bloating. He mixed it with water, then poured it into Hydrogen Peroxide(a chemical found in our bodies). It foamed and frothed like you wouldn't believe, it was like coca cola and a mentos. So maybe try avoiding sugary foods or alcohol and see if that helps. The painful urination and the mention of IBS makes me think you may have a bacteria, potentially H. Pylori. Many IBS patients actually have microorganisms such as parasites or bacterium, and not allergic reactions. Worth looking into. I stronly believe my sister has this, and she always has pain in the same spot as you. I'm not a doctor, but I suggest you consider looking into Oregano oil and probiotics. They worked great for my sister and both are fantastic for you whether youre sick or not, and antibiotics would probably just raise the risk of yeast overgrowth and other infection. Just another quick tip, there are only 2 true causes of ulcers. Not stress and not spice, but rather, NSAIDS such as advil, and H. Pylori. H Pylori is responsible for roughly 80% of all ulcers.