Privyet, Stranger. I'm sorry you're having a rough time. Can you try to live "one day at a time" for now? Unfortunately, that was too ambitious for me--I came out this summer, and for awhile, I was living one or two hours at a time. You do what works.
Things are getting better for me, but I am very fortunate to be in therapy with someone who helps me tremendously. If you can't take steps to get into counseling now, then you must do what you can. Dress as a male, bind your chest, maybe work on your voice (I don't know if there's much you can do about that). If you need to lose weight, start working on that. Can you change your name yet? Or at least adopt a masculine nickname?
See if you can find other people like you, maybe a support group in your city. Stay busy if you can, educate yourself, and do everything you can to get ready for that first step when you reach twenty-one. Figure out what your worst hangups are, and try to think of different strategies for dealing with them. Ask around. Some of us have some pretty good coping mechanisms.
And one more thing. In some ways, your age might be working against you. You might not have learned true patience yet, but now is the time to start cultivating that asset. Remember that you have your whole life ahead of you; and if you look at the big picture, you don't have that long to wait. Take the long view. That's what I'm trying to do--and I'm a lot older than you!--but I think it helps.
You can get through the next couple of years. It might not be easy, but you can do it. Keep coming here. We'll help you to stay afloat. And never, never forget that there are thousands of guys out there like you. You are not alone. That knowledge always makes me feel better, so I hope it helps you, too.