Avoid psychiatrists. They are mostly interested in biochemical processes that they can alter, which is great of you are OCD, ADD, schizophrenic, depressed, etc., but not typically sufficient for treating those issues, and completely irrelevant if you're trans. When you have a hammer, everything looks like a nail, and your psychiatrist's hammer comes in pill form from a pharmacy.
To reiterate what others have suggested, if you need to see anyone, it's a therapist, and that usually means a psychologist, someone who can help you with talk therapy and can help you deal with the many difficulties (fear, shame, lack of self-acceptance, etc.) that might affect your ability to discern whether transitioning is indeed the right path for you. And you need to see someone who doesn't have an agenda about anything, either pro or anti.