My 4 year old DS has had a terrible chesty barky sounding cough for coming on 4 weeks now. It started off fairly mild but is definitely getting worse, particularly at night. It's taking up to 2 hours of coughing before he finally manages to fall asleep. Hes generally fine otherwise, had a temp here and there but it's gone with Calpol. No temp at the moment. He had a nosebleed on Monday, I think from the force of the cough, and so I phoned our GP but the appointment is not until next Friday. DS has got up this morning and had another coughing fit (there's no "whoop" noise as far as I can tell) and is a bit upset because he's tired. DS has ASD and seeing anyone other than our own GP is difficult for him so I'm unsure whether to wait until our appointment or ring 111 for advice. I know a cough longer than 3 weeks needs to be seen to but I don't know how urgently? Any advice appreciated.