Thank you for posting this!
I have had similar experiences. The one that scared me the most was I dreamed I had overdosed. (Not even sure where the idea came from?)
I kept having the intense sensation that I needed to get up. I was paralyzed in bed. My bed felt like it was a waterbed as long as I was moving in the waves it was ok, every time I noticed I was not moving though I had to make the waves start again. Eventually that was not enough and I knew I must get out of bed I would pull together all my strength to roll out of bed and feel the security of the floor, only to realize that I was still in bed. I can't say how long this went on, but it felt like an eternity then I woke up in the morning and everything was fine.
It was so strange. This phenomenon only manifested itself to me in the last year or so. Although I do remember it happening to me one time as a child, I was awake, but could not move.
Does anyone know how to wake up from this when it is happening?