Call the police as soon as possible. Delayed reporting makes it harder on you and more difficult to find and convict the rapist. Usually, you can file a report with the police, even if you decide later not to prosecute. Remember that most rapists are repeat offenders, and that the police and the courts can't stop them without your help. A woman needs support and information whether or not she decides to report the rape to the police.
Medical attention is important even if there are no injuries.
Be sure to be tested for sexually transmitted diseases, HiV, and pregnancy. Most people find it helpful to talk to someone supportive about the assault. Listed below are hotline numbers for support and information.