Yeah, I had a sleep test & found I had sleep apnea (our healthcare covers it here in Canada so I was lucky with that). If you have a video camera you can record yourself sleeping too. This article has some good suggestions too
Sleep Apnea: Symptoms, Treatments, Causes, and Cures
I found that sleeping on my side helped quite a bit. I now use three pillows to sleep lol one for my head & one in front of me & one behind. Losing some weight also helped (another great reason to tire yourself out ;-).