Hi Amanduhh ,
A big Aussie welcome to Susan's family. It's good of you to drop in and say "Hi". Hope you like it here, and you stay for a while.
There is a mountain of information, resources and friendship waiting for you here, you just need to jump in and start talking.
Karen has given you some very wise words of wisdom. Particularly about age. You are very young and should you decide on HRT, you will appreciate some outstanding changes.
Karen also mentioned a good gender therapist to kick things off with. The aspect about GID (Gender Identity Disorder) you need to be aware of is; it doesn't go away. You may be in control of your journey, but you are not in control of GID. Thus even if you think just because of your upper body dimensions not being feminine enough, that won't stop the desire to push on, regardless of how much you try to subvert it.
Looking forward to hearing more of your story in time to come, but in the meantime, be safe, well and happy.
Lotsa huggs
Catherine