Forte, I'm so glad you are posting here; it means you want help.
I'm worried about you waiting until tomorrow to reach out in real life, though. Can you find it in yourself to ask for that help today? Can you go to a different hospital/ER? Will your parents help you to sort things out? I'm not sure how far things have gone with them, but I'd like to think if my kid called me in your situation and said, "You're right, I need help and I need it now - can you help me?" that I'd rise to the occasion.
If your parents can't be there to help you get somewhere safe today, can you call AA?