Did you check your hand soaps and lotions to make sure they're gluten free? What was the last result of your blood tests? Have your antibodies gone down? It could be another intolerance. I know that I'm also lactose intolerant but I can manage small amounts of dairy, but if I have too much I get an upset stomach and the big D. So you might eat a large amount of something your intolerant to on a certain day to give you that reaction. Just a thought.
last time i had a blood test the doctor said the antibodies have gone down so much that he didnt need to schedule another blood test with me. Ive been checked for fructose intolerance, dairy intolerance but results come back saying i'm not either.