I have been using a cpap machine for approx. 2 years now and recently I began having terrible pain in my right side with pain going around my back. It also goes to the center of my chast. I have been diagnosed with gall stones. I quit using my cpap machine as after being on it, I began to get awful pain in my gall bladder. I waited a couple of weeks and then when I used my machine my pain came back. No one in my family has gall bladder problems so I was wondering if it was from my cpap? no one in my family uses one of these either.