Contact the local police so that they can determine if charges are still feasible. In most cases, they would be but the question will be if the police / State feel that they can make a sufficient case to uphold a conviction.
In no way am I offering you legal advice, and in no way has my comment created an attorney-client relationship. You are not to rely upon my note above in any way, but insted need to sit down with counsel and share all relevant facts before receiving fully-informed legal advice. If you want to be completely sure of your rights, you must sit down with an experienced criminal defense attorney to be fully aware of your rights.