Tingling, blindness, and loss of speech at night.?

This has only happened to me a couple of times but sometimes before I fall asleep, my whole body starts to tingle and my entire body goes numb, I also lose my sight and all I see is white and black, and when I try to talk nothing comes out. I try crying for help because I have no idea what is going on, but nothing comes out. I definitely feel conscious because the TV was on and I could hear it. When I recover from this I do not know what to think. Is there something wrong?