my son is 6yrs old and he does have asthma, when he was 4, he had respiratory distress and went to cooks hospital, he has been fine, but gets sick alot, yesterday, regular day he went to school, they did go on a field trip and it was outside in the heat and when he got home he was fine, about 7pm he fell asleep and was talking in his sleep and wimpering, he was burning up, and today he is saying his chest hurts and is just really complaining about it, i checked his lungs with stethascope the doctors gave us and he is not wheezing, just sounds congested, he has been getting his breathing treatments every 4 hrs and is taking predisone, do you think this is something besides his usual ?