Are you eating mono meals and/or using proper food combining? This helps tremendously. And are you absolutely sure that all your fruit is ripe, (super duper sweet with no hint of sourness)? Eating just one fruit per day or for a week or more at a time can help heal and strengthen digestion. ie banana island.
if you're eating ripe and properly combined fruits, what cooked meals are you eating? do you drink your smoothies through a straw?
also, iron pills and vitamin pills (b12..?) can cause bloating. I had no pain or bloating, took a b12 pill, and it was back in full force.