I get a belly ache after a milkshake & dairy helps me go to the loo
I'm the same funnily enough, especially on full fat dairy. Skim milk doesn't bother me but full cream does for example.

KMN - I mean after a few days of a little cottage cheese for lunch. With the yoghurt, it was two days of a small amount (maybe one and a half tablespoons?)of yoghurt at lunch time. The yoghurt was definitely the worst, the affect was immediate and lasted for about a week.

I might give his paed a call, was hoping to avoid it but maybe it's worth having a chat to him.