Why wont this weight come off !?!?

What probably happened to you is the same thing that I think happened to me. All that dieting has messed up your body... so its going to hold unto that fat for a while until it is sure that you are going to treat it right. so i think you just have to stick with it for a while longer and dont give up. also are you exercising? you should do cardo but also weight lifting so then you burn more calories while doing nothing. um,.... thats pretty much all i know. good luck!