Weird dreams

Once when I was a child i experienced this horrible sleep paralysis and im wondering if it ever happened to anyone else before

So ,i found myself in an abandoned classroom ,tied to a chair. A woman was in front of me, writing something on the board. As i tried to get out i saw how my mother was coming out of her room and could still see the woman at the board. Suddenly, the woman turned around and instead of a face she had huge jaws,i tried to scream so my mom could hear me, but nothing came out. I was really scared. Then ,with no warning, the woman came right at me and bit my head off.

Id really want to know if anyone else experinced something similar