Thanks a lot for the replies! When I was using the machine I could breathe, but it was like I don't get enough oxygen. As a result I even got a little palpitation. I felt like I've been holding my breathe for 10 seconds even though I've been breathing... My doctor set my pressure to between 4 and 9....

I just started using my CPAP 3 days ago, and basically failed... It was so hard to breathe that after lying in bed for more than 3 hours I had to give up and take off the mask. After taking the mask off I fell asleep pretty quickly. My nose is a bit congested so even if the mask is not hooked to the...