I have a 4 years old ds who has always had upset tummies and persistent vomiting He also has an enormous distended tummy.We thought he would eventually grow out of it but that hasn't happened.Whats worrying me at the moment is that he eats a lot but has a very small frame and doesn't seem to be growing as fast as his friends.Does anyone here have experience of a similar situation and or lactose intolerance?.I have also posted on the parenting thread as I didn't tealise there was an allergy thread.Many thanks!.