What kinds of reactions are you having to various foods ? Have you tried any of the self-managed 'bland food diets' used in elimination diet programs ?

Here is one similar to what my doctor prescribed years ago.
http://www.precisionnutrition.com/elimination-diet

I also know that anxiety can cause severe food reactions. I lost 30 pounds last summer due to anxiety cause gastrointestinal problems.

Finding a doctor who can help you with anxiety may help you with your GI issues.

My best to you.