I agree you should find a therapist as soon as possible. You need that for your gender issues, your family situation, and for help with figuring out how to live with hearing voices and whatever underlying mental health stuff you might have.
My non-expert opinion is that transition and dysphoria are probably less urgent problems than family dysfunction and ultimatums. You need to guard your personal safety and your ability to stay housed. That might mean postponing issues of identity or comfort.
You really need to not die. I don't have any magic words about that but I hope you can at least humor the rest of us when we emphasize the importance of resisting the urge to commit suicide.
The thing about hearing voices is probably the most minor problem you face, but the stigma around it could be dangerously isolating. A lot of highly-functioning people hear voices, and a lot of people who do aren't open about it. I've had to learn about it after getting to know multiple people who do. They seem to be all over the map as far as their career success and apparent happiness goes.
Susans is great for talking to trans people. Hearing Voices Network seems to be well-regarded for what it does. I would urge you to call a suicide hotline if you feel like you are on the edge of that. You can google to find a local one or one from whatever place feels most familiar.
http://www.hearing-voices.org/