Get some medication with the breathing issue.
Don't sleep on your back. Also a pillow might be causing the problem.
Diet? Weight problem?
Read up on sinus.
http://www.achooallergy.com/sinus-problems-faq.asp
I did, some nasal spray for allergies. I sleep in all positions through the night, and I can't control in which one I sleep in, my sleeps are very deep. No weight problem, diet is good.
The GP gave me some info on Rhinitis, which also contains info on Sinusitis and Nasal Polyps. From reading the description of each one of the problems I think Nasal Polyps best describes my symptoms, however she told me she couldn't see any up there. As I said, NHS are trying to save money by making me buying some £8 nasal spray for allergies (which I don't have any) and not booking me in with the hospital to get my adenoids checked out. That's bought the NHS 5 months of me buying £8 sprays and not getting seen at the hospital. The GP I use is really annoying me now, my mum has recurring migraines which completely take over her and our doctor just says plenty of paracetamol will do
We need to change surgery, there's a better one down the road.
Oh what, the NHS? 
Haaa private insurance unless its a good one they always put clauses into stop you claiming and always have to be carefull filling in forms 
Ahh right, yeah I will do. Probably won't go down that route though, strapped for cash at the moment
