Hi Sandra,
Can you please see your doctor about getting a sleep study done (call me a coward, but I wouldn't use the machine without the doctor's ok)? If your ENT or neuro won't prescribe a study, can you talk to your Internist or rheumy? The rheumy prescribed the studies for me - the ENT flat out ignored the symptoms/complaints as did the neuro.
I also have a CPAP with a humidifier for a couple of months now, and I've had issues with it since day one. I too don't wake up with the ultra dry throat/mouth anymore, but I still have some problems with it (often wake up struggling with the nasal puff/straps). Unlike Skylar, I still don't sleep through the night, and I'm starting to believe I will never sleep through the night again. Boo-hoo-hoo.
Take care -
Patze