I've been working through all the requirements for gastric bypass since 9/ 2016. I've used a CPAP for the past 6 years now. About 2 years ago I started having trouble with burping and feeling too much air in my stomach when I wake up in the morning. My doctor repeated my sleep study and said that my numbers have not really changed but he put me on an auto titrate setting instead. He said I also had the option of going to a mouth  unit instead of a CPAP machine . Using titrate setting has helped but I still find that sometimes I wake up feeling very bloated and full of air and sometimes I wake up in the middle of the night burping. I'm concerned with whether this is going to be harmful right after surgery. Has anyone gone through this?