I'm not very good with coughs etc as I never seem to get them so don't know what to do - please bear with me. Ds (27m)has got some sort of cough - his first. He has lots of gunk on his chest - you can hear it rattling - and the last couple of nights he has slept terribly - it gets much worse when he lies down, to the point where he can barely breathe. In fact he has made himself sick a couple of times. He has no temperature, no cold as such. Can anyone reassure me that it is 'just' a cough and nothing more sinister, and any tips to make him more comfortable ? Thanks