Ana: It sounds like your experience was very similar to sleep paralysis. Particularly the kind that sparked superstitions about such night demons as the succubus.
When I was younger I once had this terrible fever. One night I dreamt of having the air sucked out of my lungs by an alien. When I woke up it midnight had yet to pass and I was experiencing hallucinations and paranoia. When I slept again I believe I was attacked and mauled to death by a pack of wolves. I awoke and was still quite early in the evening. I slept again and dreamt of more alien assassins, wolf mauling and various other creative was to die. All in all I believe I experienced nine nightmares in succession that night: All of them incredibly terrifying. I awoke overwhelmed and haunted by hallucinations of giant bats hovering over the house, assorted spiders and other insects permeating my room, killer puppets and facial anomalies on my mom.
It was great.
The single worst though is up in arms as far as I'm concerned. Over the past years nightmares have been few and far between. So much so that I've grown to actually enjoy them. Life is so apathetic and numbing, it's nice to feel psychologically mortally wounded from time to time.