never give up!! u will probably see some results soon. do u do any aerobic exercise? if u don't, u should cuz they burn a lot of calories and still keeps burning calories after u stop exercising. doing crunches alone won't make your tummy muscular cuz all ur muscle will be covered under ur tummy fat. arrobic exercise will help u get rid of those fat and all over ur body. good luck! hope u will lose some weight