Sexual Assault

I was "molested" i guess you could say. I told him no and his hand ended up down my pants anyways and i was too panicky to do anything because i had previous sexual ptsd so i froze. And it hurt bad. I went home and i only bled a littl but i was too scared to look. Its been months and so i decided to look. It looks like he cut me and it didn't heal. And idk what to do. Im a minor and i can't tell my parents. But it doesnt look normal. And I've noticed since then, i have a hard time getting wet now. I dont know what to do. I just wanna be normal