I would really look at your caloric intake and write everything down you consume if it goes in your mouth write it down and write serving sizes down also. Post it here and we will let you know the caloric value of what you've been consuming. Then take a look at your activity level how active are you, we are not talking about the time you go exercise also that will be something sep to look at. From there we need to see if the amount of calories you are taking in is equal to, greater than or less than what you use in a day. Diet is the biggest aspect of losing weight.
I suggest you use the caloric calculator on the main page here to see what is the avg.
http://www.epoc-fitness.com/nutrition.php