I agree with Bobish, you are most likely have gas pain. It is alot worse for people with a pouch than people with a colon. Walk walk walk. It helps everything get through your system. As you heal, and your new system matures, the gas become less and alot less painful. It seems different gas releaving product work on everyone differently. Beano seems to work the best for me. I use it to prevent gas. You will have to try different products. Everything gets better with time.