Was pretty horrifying. I woke up completely unable to move my body, and trying to do it felt like losing all energy I had and it hurt a lot, and after that I basically went full panic mode. There was a really loud eerie sound and I felt like somebody was there and it was really scary.
At one point I hallucinated being in another room and could only move my eyes, and when I looked at the direction of the exit out of our apartment(which was completely black and I couldn't see anything) it felt like somebody was there, though more like some horror monster than an actual person.
Some time later I ended up in my bed again and had to spend the rest of the paralysis with extreme feel of dread and facing the what I thought was incoming death, but eventually I started praying to die just because the feeling of dread was too hard to handle. It lasted what felt like an eternity.
Happened about 3 weeks ago but I still have trouble going to sleep now and have to think happy thoughts. Also I had some PTSD on the first week after it including completely terrified of the thought of going to sleep again, nightmares and also on the first night after it I vomited out of fear when trying to go to sleep. Now I just don't dream at all anymore and am afraid of the dark again.
So yeah, not a pleasant experience. I never knew it was a thing before but I did A LOT of research as soon as I woke up, and have started sleeping on my sides.