My DS has had a cold & cough for over a month now and it does not seem to be getting any better. He also seems to have developed some type of allergy or intolerance to cow's milk or lactose during this time too. NOthing I do seems to make it any easier for him and each day he seems to be getting more frustrated himself at being ill constantly. How long can I expect this to carry on? The Doctor's are useless and keep saying that a smiling baby is not a sick one! Like that helps us at all.