Maybe get checked for sleep apnea? If you have it, you repeatedly stop breathing during the night. It isn't long enough to kill you, but it's long enough to lift you out of deep sleep into shallower sleep, or keep you from entering the deep sleep states.
Thanks, I have been to a lab before and they said my snoring is not too bad. They wanted to give me medication against restless legs, but I didn't want to take it.
