Hi can you give me a bit more about your self you said that you are 12 yrs & weigh 86lb do you now how tall you are or ruffly how tall to me as an anorexic you sound as though are in the first stages of becoming if you are then you need to do something about it be for you get to bad you say that you are a fattie it dosent sound to me that you are but you will feel that way if you are anorexic I still drink cola as well so that dosent mean any thing as far as im can see you said that you havent eaten for 4 days as well but was forced to eat even though you didnt want it you really do sound like you have a problem & even if you weight is not on the underweight line it sounds to me like it will be in a few days

Take Care & please see a doctor