My encounters with Creepypastas

Im scared

The last dream I had of slendy, he told me that I was ready, and then a few weeks later, my best friend told me that the slenderman possessed them and showed them whut slendy wants
And that slendy wants me
That person is no longer my best friend..
Last night I think I saw Jeff staring down at me I saw a shadow from my blankets it had hair to its neck or a bit longer...I'm passing out randomly and having a weird dream, that I'm not able to wake up from. I just found a long black hair in my bed, but my hair is short and blue and it couldn't be my wig, my wig isn't that long and the hair looked real.
My knife vanished out of nowhere, I had no memory of where it be, but when I woke up my hand in motion grabbed my knife, that was in my bed, but it wasn't there before...My sister just told me she has seen Jeff in my bedroom 4 days ago and now I have knife mark and many tiny jab marks on my wall
(None wants to hurt me)
I heard whispers last night, and I decided to sleep in the living room, but I don't remember taking off the knife on my neck and placing it on my table or floor.
I get dizzy and dehydrated a lot, but I drink a lot of water. I also get paranoid, like if I was being watched and I taste blood in my mouth.
I've been lacking sleep and passing out randomly sometimes and / or doesn't sleep at all