After reading your post I did some web research to see if I had sleep apnea also. The symptoms do not match mine, however. The beast I'm wrestling with is old fashioned insomnia, and it has persisted for about a month now.
I tried Melatonin, which was ineffective, and Lorazepam, which works somewhat, but is addictive. Today was the first day I succumbed to the condition by cancelling my plans for the day and trying to take a nap---a worrisome thing, especially if it continues.
I am now sitting in the library, pondering going out tonight to sit in with friends. When I come back, if I go, it will be midnight and I will be wide awake.
I'm getting worried...