SR is not the type of place you should be asking for advice about an issue as serious as rape. You should talk to a lawyer and police if you think you really think you were raped. You need to go see a psychologist or psychiatrist to talk about these issues. None of us know what really happened, we weren't there. We are all going to have different answers for you, and they will do no good because we have no idea of all the details that happened.
None of us have enough information to give you proper advice, we don't know you, we don't know your fiance or the situation. This is a serious and delicate issue in nature, peoples lives are at risk. Your fiance may have done nothing wrong, and I do not want to be responsible for him getting in trouble. Your life may be at risk, and I do not want to give you advice that would ultimately hurt you. We should not be giving advice that could adversely affect the lives of people we DON'T know in situations that we were not present. Get help as soon as possible.