My son had chicken pox when he was three , hes just turned six and this morning getting him ready for school i noticed his stomach and chest were covered in spots !! I have kept him off school and cant get a docs appointment until this afternoon, so just thought i would ask here before doc tells me more, just panicking that it could be measles! ( he's had the mmr) can he still get measles ? and am i right in thinking you cant get chicken pox twice?