Because I do not know what the underlying cause of this is, I cannot provide specific recommendations. I suggest you discuss this with a GI Dr.
If you are looking for foods that might be easier on your GI, I'd recommend looking into a low residue diet to see if that's appropriate for you. Again, this is a suggestion to discuss with your Dr. as it may not be the best approach for your situation.
Here's a general overview of what this might look like: http://www.nmh.org/ccurl/84/948/lowfiber-diet07.pdf