I hope for your sake it's IBS. Colitis is a bitch to have! She's been trying to sort out a surgery to remove the damaged parts but she just had a baby and needs to recover from the c-section first. It's been acting up horribly lately so she hasn't had the greatest recovery already :(
I would ask about being gluten free, I have two friends who have celiac disease, one is in her late fifties an was just diagnosed with it. The other is a kid an has had it his whole life.
Idk if that helps.
Guess I should say they have your symptoms. Doesn't hurt to ask. :)