Where do I go?

I'm 12 and I just told my mother that I'm bisexual and she went up to my room stayed up there for an hour came back down with all my stuff in a huge box and put it out on the front porch slammed the door and locked it. She texted me saying she won't have a gay living with her. I don't have any family because they're all dead and I don't have any friends either, where do I go??