Welcome to the forum, TB11...sorry to hear you're feeling so uncomfortable. If I were you, I'd talk to your doctor about an elimination diet. You could very well have food sensitivities or be intolerant to lactose, fructose, or sugar alcohols. The other way to determine if you have these intolerances is by hydrogen breath testing, and you would need to see a GI for that. I personally would go the elimination diet route first...try Googling "elimination diet" and you can see what to expect!
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Please always remember to consult your medical professional regarding your medical questions; this forum is intended to provide patient-to-patient support. Although some of us have healthcare backgrounds, we cannot diagnose or treat patients on the board.