WELCOME! to the forum.!
It's good that you were finally able to get a full night of sleep.
CPAP can take some getting used to but just stick with it, it does get better.
You might have your headgear straps too tight, try loosening them a bit and see if that will help you.
Hang in there for more suggestions and best of luck to you with your CPAP therapy.
Just keep at it, you're going to like how it feels once your body gets caught up with the sleep!
Other than the possible tight fit on the headgear, are you ok with it? If you loosen it up and find it leaks, it's possible that's not the gear for you. Don't wait too long before trying another one that may suit you better.
Can you tell if you're getting mask leaks at all currently? The hurting teeth make me wonder if you're opening your mouth during the night.
Keep it up great job, welcome to the forum, you are here joining an elite club of ......
If everyone thinks alike, then someone isn't thinking.
Everyone knows something, together we could know everything.
I can relate. I'm about 5 months in on treatment and still struggle with wearing it. I still check my compliance hours in the morning. Those hours count the time I'm laying awake thinking how much I don't like having this thing on my face.
I can't comment on the head and teeth pain... I had those symptoms BEFORE starting treatment and am glad to say they have mainly abated.
It took me a while during the trail but I did come to know that I feel better with it. Now I don't want to sleep without it even if I still rip it off my face in frustration from time to time.
NOT ALL MACHINES ARE THE SAME (especially as it relates to their 'smart' breathing algorithms)! I tried one that I couldn't stand during the trial and then the one i ended up with and bought. They are very different experiences (A-flex versus ERP if i recall the acromyms correctly). So if you don't like yours on the trial consider trying a different machine.