Oh,oh, oh, I'm sorry about your past. Think you will have to bring it out in the open with a counselor and address it.
Just had this discussion with my husband who is 53 yo. He's an alcoholic. Was sober for 7 yrs but then when life got stressful, and there were a lot of changes, started out slowly, till now his intake is unbelievable. He says that when he goes to bed at night, he is never free of the memory of his molestation when he was 5, that continued for several years, and no one ever found out. His plan was to find this guy, and kill him-this was recent. Thankfully, he can't locate the guy. He really cried about this matter in the past, and finally told me details, and I thought it was much better for him after that. Apparently not, maybe better, but not gone.
For this reason, I think you should seek counselling for this now while it is in its beginnings of haunting you. Nobody deserves to be treated like that by their dad or anyone else. You might need additional help with it from time to time in the future, but a good strong dose of dealing with it with a therapist might stop it in its tracks.
Since you are in high school, there's a counselor at school that can get things started. Hope you will take advantage of it.
Hope this helps