I would say that in ways you are anorexic. Im not a professional or anything but the sickness from eating could be stress related. I am dealing with the same thing. Maybe talk to someone about the not liking how you look thing and other issues. Even if it's a counselor it might help
You have restrictive tendencies but probably fall under the OSFED umbrella for now. Seek help immediately.
Don't cop to Anorexia so fast. You are not too thin....and neither am I ! You are 5'7" 120lbs.? That's not bad at all but you must not, MUST NOT ever "purge!!! That is sooooo bad for you. I am 5'4', 96.4lbs. and not at all worried about it. Watch everybody jump on me for saying that......My shrink is all concerned and wants me to get on CBD (??) medical Marijuana because I have no appetite. Two meals/day is about all I can do, too, but I pick GOOD foods to eat and NO meat. Take your vitamins and supplements like Strontium Citrate for your bones & teeth. Check out "Puritans' Pride" online for good vits. & minerals. Thin is fine as long as you are healthy and feeling strong. Eat salad w/ tuna or HB eggs in it. Just eat RIGHT and don't worry so much about quantity. If you get down to say, 100#, then you'll need help. Let me know how you're doing and don't worry yourself to death! Shalom, Channah