Reaching out for help in anyways, is a great first step. I agree with calling your local aa chapter. Someone will be more than willing to help you with the next step in your area.
I agree it does keep getting worse and worse. I tried quitting so many times in my twenties. I really wish I would have for good then.
I detoxed at home over a month ago, my mom stayed with me and had some zofran to stop the puking. But it was scary, I was so sick for several days. And even had some hallucinations.
Your so young, you can do this.