LGBT: I don't know what to do... running out of options here...?

Your story is actually really moving. I don't have any such experience so I don't know what to say. I really wish I could help you, it sounds like you're living a terribly unfair life and you deserve much better. I would suggest maybe moving in with a friend or even moving on by yourself, depending on how old you are. I really hope they understand how precious you really are before they lose you forever. I really hope it all ends up well for you.