Quoting miss mandiie:" i am dieting and doing exercise everyday,i have been since october."
Have you be losing between .5 a lb to 2 lbs a week most weeks? This is overall?
If so, then you're getting there. Also, are you measure inches? Muscle takes up less space then fat for the same weight, which means that if you are building muscle, you may not see movement on the scale.
If you are SURE you are eating right and exercising well, and you are still not losing weight, you should see your Dr to have tests run on your thyroid and other issues.
Do you track your food? I mean write down EVERYTHING you eat? Do you weigh and measure it all, or guess? It's amazing how many calories can be hidden in things we don't really think about. A bite here and there can add up! Also, lots of people misjudge portion size, so they end up eating WAY more then they think because they eat more of something then the realize.