I have been using my CPAP for a few weeks (on and off getting more and more used to it). There has been bad bloating since day one. However A couple of weeks ago I developed Groin acking over a couple of days that eventually radiated into my lower abdomen that persisted all day. It finally got so severe I thought I had kidney stones. The next day (after not wearing the CPAP), the pain was gone and I assumed I had passed a small stone. I didn t use the CPAP for about a week. After starting to use it again, after two days I began to develope that dull groin ache again. When I went the next night without the CPAP the pain subsided. What is that all about??