I also had problems with using my cpap machine, no matter how much I tried to use it it caused me severe anxiety, enough to cause me to go into full blown panic attacks, went back to my apnea Dr told him how it affected me, showed him how it affected me and was told not to worry about using it, as it was causing me full blown panic attacks which at one point lasted days, they hooked me up to a heart monitor and my heartbeat and blood pressure was outta control, where it had been normal before. I am on prescribed medications for my anxiety and panic attacks, but what I felt as I tried using it was way beyond control even with medication, even after I stopped using it the panic attacks continued for days, wish I could offer some advice, I just know how I reacted to it so I understand how you feel, and my apnea Dr faxed over a message to my surgeon, letting him know about my problems using it and my surgeon was ok with me not using it and was still approved for my surgery, though I still took it to the hospital the day of my surgery, but they never hooked me up to it. I'm not saying that is what your Dr will do but as for me not wearing it was much more beneficial than wearing it. Hope things get better for you