I have been experiencing the exact same thing over the past year. Just as I am falling asleep, I snort and gasp for air. I was originally diagnosed with mild to moderate OSA. I tried the cpap machine but just couldn’t sleep with the irritation. It just seemed like my sleep doctor was pushing the machines and not really trying to figure out what was wrong. 6 weeks ago I had surgery to remove my tonsils, shorten my palette, straighten out my deviated septum and reduce my tongue. This was an extremely painful recovery. Unfortunately I still wake myself up every night just as I am falling asleep snoring or gasping for air. In the morning I wake up and try to fall back asleep but it continues to wake me. One other weird thing is that I also have random muscle spasms and muscle jerks right as I fall asleep. My arm will suddenly move or my whole chest will lurch forward. This is so fripustrating. It just seems like there is no light at the end of the tunnel.