Waking up in a strange room

Groggily, I sit up and look around the dark room. There is only a minuscule amount of light coming in from some distant source of unknown origin. My mouth is dry and pasty, my joints ache, and it's chilly. Suddenly I hear this terrifying sound and a ghostly wisp is coming at me at an alarming speed. The wisp has a glow as if it had an internal light source. The room is tense and I can feel that this entity is very angry. I feel vice-like grips on my arms, shoulders, and legs. I try to scream but nothing comes out, is it fear? Is it the dryness? Although the room is clearly unfamiliar to me I realize that I am still lying on my bed from my room. The wisp is trying to drag me off the bed by my ankles. I feel that I am fighting for my life! I dig in my fingers into the quilts and down to the mattress of my bed but to no avail. Suddenly, just as quickly as it appeared the wisp is now gone and I am lying on the floor. For a few minutes, I stay their with my heart trying to pound it's way out of my chest. The wisp may no longer have me but fear still has a firm grasp. Now the room appears to change in the low light I can see my bedroom again. I am relieved because now I realize it must all be a dream. Somehow I am back on my bed again and trying to pull myself out of the bizarre dream. Again the wisp appears and it is smothering me, I can't breathe!! I struggle to pry myself free from it's grasp but I don't have the strength. Now, I realize all to late that this wisp is a demon or vengeful spirit of some sort and while I may be dreaming the choking, the fear, the peril of my mortality is real. I feel the metal of my necklace it has this burning hot and cold sensation. I have an epiphany, my necklace! It's a cross. I grab a hold of it in hopes that it will protect me but it is not enough the spirit trying to inhabit my body. Urgently, I begin reciting "in nomine Patris et Filii et Spiritus Sancti," over and over again as I hastily draw crosses with my fingers all over my body. Even with the danger I am facing I realize that this all seems a little hokey but the thought is just a flash as while I pushed the spirit away it has come back to try and attack me again. With a bolt I am awake feeling as if I had just fell the distance of the ceiling to my bed. I am hesitantly peering around still expecting it to all be a dream. My chest is still pounding, my necklace still warm against my chest, my arms and legs feel bruised. The air feels heavy as if the entity is still lurking. I have no proof of my ordeal but I am certain, none-the-less, that it was very real! I want desperately to put as much distance between myself and this room as quickly as possible. Even as I reach the living room I am still wary that I may still be dreaming. As I watch the TV and bask in the glow of the bright ceiling light, I slowly accept that I am awake, I am alive.