Astral, like many of us here I have been through this. My sister didn't take me seriously at first but does now. Two things may help you:
If you can go to a therapist or even support group, it will help you. The therapist doesn't have to specialize in gender issues to be helpful. You could use some help straightening up your head before you even worry about hormones. (At least I sure did.)
And try not to isolate yourself from the world. The more you can be with other people and relate to other people and talk to other people, even if you aren't free to talk about your gender issues, the farther away from the dark hole you will stay. And when you get close to falling in the hole again, perhaps you won't fall as far down it.
I had the most trouble when I lived mostly in my head. It wasn't healthy for me, and so that's why I give you this advice. I don't know - we're all different. But maybe it will help you to be with other people more.
Take good care of yourself, dear.

- Kate