sleep paralysis very short very scary

Date: 6/28/2017

I was just dozing off and suddenly I feel it start to happen. Instinctively I open my eyes and lift up my head to try to stop it but my head drops back down and I feel my body paralyse. I feel very very scared in this one. I feel something dragging me out of my bed and it feels so real I can feel my body actually moving against the sheets. Also I can hear weird loud noises in my ear and in my left ear I hear a scary childlike melody played on a xylophone and it scared me so much. I feel so scared that I quite quickly wake up and it only lasted for 20 seconds. My body has actually moved down the bed slightly but I don't know how I moved if my body was paralysed??