be careful though, I was passing through the same things (I'm 18 now) and, to be honest, it could be confusing.
First, I STRONGLY reccomend that you see a psychologist and that you get help from him. With this, I don't want you to think I'm sayig you're crazy, but the psychologist could give you a very good help with your decisions, and he could become your support for all this.
Don't start HRT yet, seriously, you need to see a therapist before doing all this stuff so you can make sure that you want to do this.
Whatever you do, I wish you the best of luck! and may the force be with you