Hi there.
Please allow me to start by saying I am sorry that ever happened to you...I truly hope the "man" who would do something so awful to another human being is getting precisely what he deserves.

No one on this planet deserves to be put through something like that.
Hamster brings up a good point...trying not to think about something is paradoxical. You can't actively forget something, as trying to do so requires thinking about what you're trying to forget.

I don't think you'll find much success with that.
I think you absolutely should bring it up with your therapist. He/she can help you work through the emotions that this would bring about, and help you work past it. A scar like this, sadly, never truly fades all the way away, but it does heal.
I hope I was of some help. Please know I'm praying for the both of you.
Hugs,
Harley