Have you been tested for sleep apnea, if so are you using the
CPAP mask when sleeping... if not, you should see a pulmanary doctor and cardiologist to check all this out.... I have sleep apnea, I went thru a sleep study. I could get used to the mask, once i would wake up i would have anxiety attack that i could use the mask....but then there was a lot going on in my life... good luck..