It feels like 7 month old DS has had one cold after another pretty much from birth. If he hasn't got a full blown cold he is very snuffly. He currently has a cold and very bad cough, is coughing to the point of throwing up and he is really miserable with it. Has been ongoing for last 3 weeks. I have taken him to the GP twice in that time but he does not have a chest infection and was told there was nothing that can be done. Any suggestions as to anything I can do to help with the cough? TIA