@ankara-- It sounds like you have a wheat or gluten intolerance. You need to get intolerance tests too find out.
I have a mild wheat intolerance. I also get stomach aches and bloating after eating wheat bread.
You could also do an elimination diet to see if you have a sensitivity to wheat or gluten. Remove all wheat from your diet for a few weeks and then introduce small amounts of wheat. If you get stomach aches only after eating wheat, you will know that that's the problem.