Not this,

I experienced several months of real fear about falling asleep, even though I wanted to sleep. Never before has this happened.

I am much better about it now. I don't go to sleep worried about it any longer but I still wake up in a bit of fear.

I have found getting a piece of fruit when I wake around 2 or 3 am helps with the waking for good part...I usually get a small easy to peel tangerine.

As mentioned above by Aelfaba you aren't alone.