>>2 umm that's not how it works. At all. It's nothing to do with puberty and hormones, it's a psychological disorder.
>>1 most likely, you might have anorexia which is a serious psychological disorder. You're not crazy, let me clarify that. But it's beginning to be obvious that you can no longer fight it alone, and if it keeps getting worse either your depression will get you or the anorexia will. Either way, you need help.
I hate it when people say that everyone should just look after themselves. No, that's next to impossible and it's perfectly okay to ask for help, especially when you need it.
I urge you to see a therapist as soon as possible, with or without your parents, or just convince them to take you somehow.
Just please don't kill yourself. You also one day need to realize that eating healthy is important and you can still do that and stay skinny and at a healthier weight. A therapist can help. Good luck and keep us updated, we're here for you if you need someone to talk to.