SLEEP PARALYSIS

has anyone ever experienced this.?! If so what was your experience.? If you don't know what it is here's a breef explonation.. If you have ever "woken up" or just opened your eyes but felt as if you couldn't move but was seeing something in your room ( usually something scary ) then that's what it is. I "woke" up this morning but could t move my body. And seen a shadow walking to the side of my bed, stood in front of my baby and started hissing. I was shaking all over. Almost like a seizure I was so scared and my whole body felt numb almost from the fear going through my. I quickly actually woke up and the figure faded away but I continued to shake from being so scared for roughly 5 minutes.! I am still scared!!