Talk about your feelings. You may wish to supplement your support system with professional help, or support groups for survivors of violent crimes. Your decision may be based on the severity of the crime, the likelihood the offender will be arrested, and how the local police will deal with you as a gay, bisexual, lesbian, or transgender person. Having someone who you know does not share your assailant's bias makes it easier to report, because you know that you will not be victimized again. If you have medical expenses, have lost time from work, or need counselling, you may wish to make a police reports.
Many states have funds available to compensate crime victims, even if there is never an arrest.
If you have made a police report, then you may be kept busy with talking to the investigator, making statements, identifying the perpetrator in a line-up, etc. You may have to work to get your case taken seriously and handled sensitively. The decision of whether or not to press charges is one that the District Attorney's office makes after you file a police report. If they decide not to press charges, you can ask why. Their decision may be based on the seriousness of the crime, the kind of evidence, or how likely they think they are to win in court.