16 Year Old On the Verge of An Eating Disorder...need Advice

I'm 16 years old and I weigh 102 right now and am 5'...I used to weigh 107 at the beginning of the summer (i weighed 20 lbs less before puberty came and ruined my like lol)....I've lost 5 lbs w/ in the past month by having: a cup of milk in the morning and basically endless lettuce and maybe a lil bit of carrots or broccolli and a couple strawberries and a slice of apple....... When it comes to exercise sometimes i'd do an hr of stairs or an hr jogging or some dancing

now when I step aside and look at what i'm doing to myself I realize how stupid i'm being...Everytime that I come to eat anything ..... Even broccolli...I feel guilty even if i'm not overeating ....I want to stop this and just eat like a sane person esp b/c I need my vitamins (i am 16 afterall) and if I stay at this height i'll always look like a fat midget..........But I know that once I begin eating again it will lead to a drastic weight gain but I really do not like feeling fat......I really just want to put food away almost altogether just so I could reach my goal of getting rid of the excess fat that is slathered on my body but i'm a smart girl and know that I should not deprive my body but still i'm a perfectionist and just find the look of celulite disgusting .... I want to have the body of rachel bilson really really badly and will at this pt do anything to get it.....
Does anybody have any suggestions for a good diet that will help me lose weight but still keep me nourished?