D.C.
I agree with Missy - gut flora issue, which milk might aggravate, but milk doesn't cause it. Try a probiotic. I'm sure there are many that kids can take, but my ped recommended culturelle. We took an adult capsule, pulled it open, and put it in their food. For an infant (under age 1) 1 adult capsule would last about 3 days. For a 2 year old, I'd say use 1/2 an adult capsule per day. Try it for at least a week.