Am home alone with 11mo son who has a terrible cough (not a worrying one, touch wood, but just constant). He is so tired and just wants to sleep but he can't. I have been in to try and sooth him and offered him food and water, but if anything this seems to make him more upset. He is in there now moaning/crying on off with each cough (at the moment coming every 5-10 seconds). he'll have patches of 10 minutes with nothing and then it starts up again. I have the humidifier on, but it doesn't seem to be making a difference. What should I do??