DS had a real problem with a cough everytime he got a runny nose or he would run or was in cold air. Took him to the dr's numerous times and a big culprid was his ears. We were treating him for astma just in case cause the cough just seemed to linger and our dr said it was hard to do a definitive test for astma at his age. DS's dad always thought he had a chest infection but his chest was always clear when they checked it.

We did have some mould growing on our cielings which I finally took care of, within a week his cough had disappeared and I stopped using the astma medication. It has been about 2 mnths. He did get a cold on thursday last week and that is usually when his cough would return but it hasn't. He has started to cough but I suspect it's his ears and will be taking him to the GP tomorrow.

It's really hard not to worry but all you can do is keep taking him back to the dr's and getting him checked. If you do suspect a chest infection though I would try and get him to another dr just for a 3rd opinion just in case.