Sometimes there may be no clues even in the way a person acts. You may be concerned about someone's behaviour if a person makes rude sexual comments towards you, bugs you to have sex when you don't want to, follows you around, or if a person has sexually assaulted someone else. Maybe they're worried about what will happen to them, their family, or their friends. Reporting can give the offender the message that it's not okay to commit a sexual assault against you or anyone else.
Physical evidence can play an important role in proving a sexual assault case.
It's important to collect physical evidence as soon as possible after the assault. The longer you wait to report a sexual assault, the more physical evidence is lost. This makes it more difficult to prove that it happened. You may have difficulty remembering some of the details of the assault if you wait too long to report it. There is no time limit on when you can report a sexual assault.