Sleep Apnea Support Group
Sleep apnea is a common sleep disorder characterized by brief interruptions of breathing during sleep. People with sleep apnea partially awaken as they struggle to breathe, but in the morning they may not be aware of sleep disturbances.
I think everything gives me acid stomach.
I've had 1 episode of waking up chocking since my c-pap and it was on a night I had taken it off.
Stay with it, You can get used to it, just takes time.
Good luck
Oh, I've also heard about the elevation of the head of the bed helping other people, as lenox62 suggests.