@Tofuchild,
The normal weight for a 14 year old female who is 5 ft 5 inches is between 126 and 132 lbs. So you are somewhat over that, though not by any enormous amount.
My suggestion, which worked for me, is to cut out ALL added sugar. You can have one glass of fruit juice a day, but no sodas, especially not those with Nutrisweet. No sugar in your tea or coffee either. A really good help is powdered Glycine, which is a necessary amino acid with has a slight sweet taste and which I use to sweeten coffee and tea. The body makes this substance anyway, but we also take it in. Way back when, when people all eat the whole animal they hunted, people got plenty of Glycine because it is located in the animal's bones, and back then those bones went into a broth. We don't do that anymore, and people now miss the beneficial effects of Glycine.
Also, if you lose weight merely by restricting your calories, you will also lose muscle as you lose weight. With glycine, ALL the weight you lose will be fat, your muscles will remain as strong and toned as ever. Of course, a diet and exercise is also necessary. It is a good idea to start now, it is easier to lose weight when you are young and active than it is when you get older. Don't postpone.