Your thread is titled "What should I do now?" and I agree with the others, that now you need to try the diet very strictly. It should answer the question of whether or not you tolerate gluten. Keep in mind that you may also have a problem with lactose and should avoid that to start with too and buy one of those 'expensive' almond, hemp or rice milks (but not Rice Dream which is gluten contaminated).
I have already had some of the almond milk products,.....I think they are good myself.
I really don't drink milk much at all, nor eat cold cereal per se. My weakness in that area is cheese
I just read all of the things you have to avoid in your sig line,.......wow! I'm sorry you have all of those issues.
Funny thing is I am not like most Americans in this day and age. I largely eat healthy,....not overweight,......lipids are great,......I eat mostly what I call whole foods. I replaced beef with grass fed bison over a year ago and now I can't stand the taste of regular beef.
I am one of those strange folks that eats to live, not lives to eat. If I need to do this I will be able to deal with it I am sure. Only new thing will be baking bread myself,........some of my friends might wonder about me! LOL