Help me

So I was raped when I was 9 and I was raped everyday for a whole summer by my cousin and I don’t know what to do. I’m 15 now so I probably can’t do anything but does anyone know if I can? It makes me so depressed and I cut a lot and I want to die I can’t deal with keeping it to myself. None of my family knows. Everyday I have flashbacks of it and it makes me feel horrible.