It would be a Psychologist with transgender specialization. With a psychologist you are not there to understand why you are the way you are or change the way you are, instead you are there to find a way to live with what you are. In an appointment you would explain what you feel and then there might be questions. The questions may be things you haven't thought about and your answers will help you understand your feelings. In the end, you will have to make the decision what is best for you and the more information you have, the better your decision will be. The doctor make sure there aren't other problems you need to deal with and help you with your decision but in the end, you will make the decision.