Yes, you can still go to the police and report your rape. By reporting it can have 2 effects;
1) for yourself , it could be the beginning a a healing long overdue-get it in the open, with people non-judgemental that will listen to you and help you deal with the emotional issues sure to come back and possibly prosecute the thug that raped you.
2) by reporting, you may save an innocent victim of the HELL you went through. No-one deserves this to happen to her. This rapist may become a serial rapist, murderer, and you may be the only one knowing the truth..