I was lying in bed trying to get to sleep around an hour ago when suddenly I started hearing voices all around me of my friends. It was like someone was speaking in the background about something I couldnt make out. Images of rotting human faces kept flashing in my mind so I turned on my desklamp to try and snap out of it. I noticed there was a strong background humming sound that Id never noticed before. I was then subject to a strong feeling of presence in the room. Wherever I looked I could see/feel someone in the corner of my eye. I watched youtube to try and snap me back to reality but I kept getting easily scared by stupid things. My own nipple scared me for fucks sake. Sometimes my hands would look like they werent mine or my skin looked odd and fake. Im currently listening to music but every time a new song starts it scares me and im scared to stop listening incase the voices come back. Ive read derealisation can be caused by anxiety maybe this is it. I also had a sudden stabbing pain in my side it felt like some vital organ had just failed or something but its fine now.