Dreams about myself killing people?

Lately I've had these weird dreams about seeing myself stabbing these random people and mutilating them and decapitating. It's all very disturbing to me because i would never harm a human soul. What does this mean? Am i going to end up as a future killer? and no, I've been to a psychiatrist, no good to that, i'm very smart with a high IQ and im in the high honor roll in school. I'm 13 years old, and i'm your perfectly normal teenager. and i'm a girl. But for some reason lately, i've been very fascinated with death and see it as wonderful. i enjoy seeing people suffering in pain, and blood and all that stuff. SO WHAT SHOULD I DO?!