Sounds like you're developing one. I started out the same way, I took a lot of drugs and basically forgot to eat, I went from 175 at 5'4 to 130, after I realized how much I was losing I didn't wanna stop, I started throwing up, not eating, obsessing over girls who were "smaller" than me and taking a lot of laxitives when I was barely eating anything, and aready eating no fat. My advice is to look in the mirror and ask yourself if you're happy wit what you see. Do you really need to lose more weight? Or do you just want to tone up? My mom works in a psyche ward with anorexia patients and when I was in your position, she said I was starting one, its a vicious cycle tha only gains momentum if you feed it. you know how painful it is when your body begs for food.. and when your heart and chest hurt from malnourishment. Its not wrt it, you'd be better eating high fiber and protein foods and toning muscle, I've learned guys or girls aren't too attracted to a skin and bones 00 size girl that can't keep food in them.. yeah welook good in an oversized sweater and skinny jeans, but under that its a bony chest and weak fragile limbs.. not so fun. Be healthy and don't obesess with weight loss, obsess with your health. Your bodys a temple not a disposal. Sta positive hun, its not at all glamourous