Something caught me while I was in sleep paralysis

Hi all - I have this problem with Sleep paralysis for so many years. Now I have known to control this rather than getting freaked out. But what happened with me this weekend freaked me out.

I was alone at my home for the weekend as my roommate had gone for camping. I was trying to pass time by watching some movies at Netflix and later in the night, i watched some episodes of ghost adventures. Generally, it was the last thing in my mind before i went to sleep. Frankly I was little bit scared, so i put on the kitchen light and tried to sleep. After about 1 hour, I woke up, but in Sleep paralysis. As usual I tried to relax to let it pass. My eyes were little bit open and because of the light in the kitchen, it was little bit bright. After struggling for almost 2 minutes, I don't know why, but I started to think about all the scary things, like the episodes of Ghost adventures I saw earlier. I panicked and wanted to wake up quickly. I struggled, but i couldn't get my body moving. I was lying on my back, and suddenly from the corner of my eye, I could see a shadow moving quickly towards me from my left and I felt it grab my right hand. Initially I thought my roommate came back. But I realized that he would be coming on Sunday evening. Cold fear settled over me as I tried to move my body and wake up quickly. I was imagining all kind of things for the worst.

After a long struggle, I finally could move and woke up quickly. I looked around and there was no one. And I could feel this pain at the right forearm. I mean I really don't know if I had hit it accidently somewhere or maybe because I imagined something had grabbed me. Whatever it was, my arm was paining too much. I was too freaked out and afraid to go back to sleep that I stayed awake the rest of the night and slept when the daylight came. I imagine so many things when I am in sleep paralysis. I have seen figures and sort of things..but this is the first time I felt something grab me. Its weird...

Too afraid to go to sleep now