Hi, I see that your post was a long time ago, but perhaps you still check here. Much of your symptoms suggest celiac disease, or at the minimum gluten intolerant. I am no doctor, but I am dealing with celiac myself recently. Gluten intolerance and celiac disease often cause other food allergies and intolerances. And they definitely can cause every one of your symptoms listed.
If you do not want to go through the testing, then try eliminating gluten from your diet (wheat, barley and rye) and see how you feel. READ ALL LABELS to make sure you are not getting any gluten. Be strict about it. No gluten at all, no wheat at all. Not even a crumb, especially since from your symptoms you sound like you are very sensitive to it.
If you do want to get the testing done, do not stop eating gluten foods until after your testing.
If you do think you are either celiac or gluten intolerant, I suggest you check out the forums at celiac.com. There's lots of information there, more than what is here.
(The energized water in this forum where you posted here in Cure Zone does help the gastritis I get from gluten exposure and exposure to my other problem foods. Zantac helps sometimes, but takes an hour to work for me, and hardly touches the burning pain when it is really bad. Drinking 8 oz. of energized water kills the stomach burning for me within 5 minutes. But it is not a cure for celiac, just helps with alleviating some of the symptoms. It is 100% necessary for me to avoid gluten and my other IgA antibody foods.)