About eight years ago I was on a sleepover at my Grandma's. I usually would sleep on my aunt's bed while she wasn't there, but this was one of the times she was home, so I crashed in the couch. For some background, the living room goes straight to the dining room, which leads to the only bathroom of the house. My grandfather has a bladder problem so he needs to pee constantly during the night, therefore to light the way the dining room has the lights on the whole night so that he won't trip on the way.
That said, I went to sleep that night and nothing seemed out of ordinary until I woke up alarmed, covered in sweat, to realize that the light from the dining room was off, but there was somewhat enough moonlight to allow me vaguely see a person walking in my direction, I was about to ask who I thought was my grandpa if the light broke down or something like that, when in the middle of the sentence my voice died on my throat. The closer the "person" got to me, the harder it was to breath, to think and I couldn't even move. I saw it's hand starting to reach me, but when it was starting to get close I passed out, and when I woke up sometime later the lights were lit this time, and took me until morning to finally fall asleep again.
I told my family about it, but everyone told me that it was probably a dream, and in the bright day I convinced myself that it probably was that as well. I even read about sleep paralysis, and it became clear to me that it was probably what happened, but it still felt bad just to think about it, and sometimes I felt watched in bed, mostly when I laid down facing the wall away from the door. Sometimes I felt the very same cold sweat dripping on my skin, and a strong presence on my room, but I always tried to brush it off as sleep paralysis, paranoia or something in that lines.
Until a couple months back, when it happened again, that is. I work as a freelance translator and I spend a lot of time with my notebook on my living room, and sometimes I fall asleep there. On one of those occasions, I woke up with some of the same symptons from that time, the lamps that I can see from my living room were off, but this time I was sitting, not laid down. So I start to look desperately around and then I saw him on the barcalounger across the room, sitting comfortably and looking me in the eye (or so I felt), hands on the supports. As soon as I saw him, my whole body froze and in my attempts to move I felt my notebook slide from my lap to the couch and then I fell as well, but I got in a very uncomfortable position and yet I could look to him, and he watched me for a while and then got up, and as soon as he gave the first step I passed out in the same way than before, but this time when I got to my senses again I was sitting on the barcalounger that is by the one where he was sitting, instead of the couch. I got really freaked out by it and ran to my bedroom. Since then I avoid as much as I can sleep on the living room, but even then, I feel that presence in my room while I'm struggling to go to sleep.
I don't know if it'll happen again or not, but I think I'll try to talk to him.