1. There was nor is anything wrong with you. He was an authority figure.

2. Once you realized it was wrong, you were ashamed of both the acts and your initial reactions. If you felt there was something wrong with you, then wouldn't it stand to reason that you would not want to tell someone for fear of them finding out there was something wrong with you?

3. This isn't about something you did wrong, but something he did wrong. You should talk to a victim's counselor. I don't know about the laws in your area, but you may still be able to press charges, but more importantly, you need to talk through this with someone so you can forgive yourself and realize it wasn't you.

Hang in there, coming here was a good first step and with time I hope you can get the proper help you deserve.