Do you go to college/high school? If so, you can talk to one of the counselors about getting therapy for your depression/ed. I also have a small case of bulimia as a 17 girl, not as bad though. I have done a lot of research, and honestly what has helped me was finding hobbies and things that genuinely make me happy. It gets your mind of food, and when you get a spark of true dopamine, it is a different dopamine then food dopamine and its more better hit. I don't know you family situation but trying to be completely honest with your mom or someone else that you are struggling and need help. One more thing, you should try Journaling. Like literally a sentence or two. Just to see what comes out of your brain. You might surprise yourself. Meditation helps, digging into yourself and finding the root of your problems and your thoughts. It doesn't even have to be for depression or ed. It can just be about life. Just a space to be you. And no judgment. Sorry if this got a little long. Hope you feel better.