Oatmeal gives me problems as well. Even though oatmeal is supposedly gluten free supposedly how it is processed can end up causing it to contain gluten, so I'm guessing that's why it bothers me. When I eat GF most of my GI symptoms go away. I still have problems every once in a while. Mainly it's the feeling that I have to keep going to the bathroom or when I go it's only little bits at a time.