I've noticed alot today. Maybe my nose is dry?

I am on my 5th day on my cpap machine and have noticed a weird feeling during the day when I'm awake and not on machine. The best way I can describe it is it feels like when you first put on the mask and the ramp is on low, like 1 or 2, and you breathe through your nose and it feels like you're not ...

My AHI was 76.1

I am a 32 yo mildly overweight female.I keep hearing that it's abnormal for women of my age and weight to have osa. Especially as severe as mine. I just got my machine two days ago and my pressure is set at 14. Is that high.