Does the normal overnight sleep study test only for Obstructive Sleep Apnea, or does it also test for Central or Complex Sleep Apnea, or other breathing problems? I've had this problem for quite awhile, where I find that as I'm drifting off to sleep or just laying there, it's almost like I forget to...

My level is 9, and EPR 3 (I think that was the abbreviation for that 3 thing).

I've only had my CPAP machine for 4 days now. I had to get the full face mask because I absolutely couldn't breathe with just the nasal one. The main problem I'm having with the mask is that I can't yawn! I don't know if it's because I have mild asthma, or because of some of the medications I'm on w...