@katied29,
While memory is usually regarded as the least reliable of testimonies (think UFO sightings) coupled with negative associations later in life with similar intimate acts, the chance you're remembering things correctly is quite high.
I'd advise getting into a counselling program either for rape, or the more specific instance of childhood traumas of a sexual nature to confront, assimilate, and learn to live with what happened. If you ignore it, it just festers there in your subconscious and you can never heal. Therapy wont make you forget it, but it'll help you learn to incorporate it into your life so it's impact is less.