I had the same issues for 13 years before i was finally diagnosed with celiac sprue, an auto immune disease caused by the consumption of gluten. I have completely eliminated and possibility of gluten in my food and corrected hypothyroidism and eat papaya and now 14 years later are much healthier now...please look into this. To help heal...besides going gluten free, the specfic carbohydrate diet theory is very useful in healing the gut. Over the many years, this is a short cut...also look into taking digestive enzymes. The book "Enzymes and Autism" describes the use of digestive enzymes for different food intolerances and allergies...the best thing to do is to learn as much as you can because the doctors don't have time to solve difficult chronic problems....