hi, from what you have said it is probale you have an eating disorder, most likly anarexia, the best thing for you to do is to go and see your docter, they should be able to help you or refer you to specalist serveces. an eatinf disorder is not silly but a madure medical problem, it is your friends problem that she has not botherd to understand this. you might find the suport websights are helpful, also feel free to mesage me if you want to talk feeling privetly.