I have been breastfeeding my son and now he is 5 months old. He has a cough that has not gone away for at least a couple of days. I wonder if this could be a change in season causing this or is he really sick. He has no other symptoms. The cough does sound kinda raspy. Should I take him to the doctor?? Is there anything natural that I can do from home to help him?? He seems happy despite the cough.