ok i am 13 i am 5′ 8" and i weigh 115 and i feel fat how do i loss weight?

I used to be morbidly obese, then i lost ALOT of weight, but i didn’t lose it in the Healthiest way, i was recently diagnosed with Anorexia Nervosa, and i am in Treatment. i know that it wasn’t worth putting my life at risk just to lose weight. but anyway what do you think

(sorry i had to black out my big chin)

http://s191.photobucket.com/albums/z199/Johnnydepp159633/?action=view&current=ewwwhatafatty-1-1.jpg&newest=1

Okay,I’m trying to lose some weight with out making my life miserable like most diets do,I want my hair to be silky and smooth,and I want to get rid of the stretch marks on my skin.I have marks on my skin from when I got scars,and I couldn’t stop myself from picking and scratching at them.I also seem to have some acne/pimples on my face.Could anyone tell me how I can fix some of these?Any help would be appreciated!

I have to wear a skin tight dress in a week. how can i lose weight super quick? Do those shorts with the support tops that go to like, your boobs work good? muy importante!!

I turn eighteen next month and want to get a tattoo. Thing is, I’m eventually going to have gastric bypass (as soon as I lose another eight pounds). I’m at the very minimum for having it, and will (at most) lose about eighty pounds in a year. Thing is, I don’t know if the tattoo will become distorted with the fast weight loss.

What are other places that if I lose this weight quickly, will stay the same?