I've had a cough for about 3 weeks. I've been hoping it'll disappear but not so far.
I never really go to the doctor as they can't do much about a cough, can they? 
Anyway when I breathe my chest is rattling.
I'm worried it's a chest infection, am vomiting up phlegm/acid in the morning but I think it's just the coughing making me vomit. I had severe ms until 20 weeks and the vomiting was worse in the morning when I coughed.
Anyway I'm worried that I'll be lying in theatre coughing.
Can they give me anything for this? How do I know if it's a chest infection?