I was diagnosed a year or so ago with OSA at Papworth Hospital. I was given a CPAP machine with a mouth mask as I tend to be a mouth breather whilst asleep. Snoring loudly is a problem too. I don't have a severe problem, but enough to warrant a machine. I have had various masks to try, and have had the CPAP swapped to a model that is not constant but only gives out oxygen when it senses that you have stopped breathing. The trouble is I have had to send that machine back too as I was waking up in the middle of the night with extreme wind in the stomach causing dreadful pain. I couldn't get used to it as it caused me to be in agony. Now I'm not using a machine and I have reverted back to being tired during the day and stopping breathing at night as well as the snoring. any advice anyone?