You don't want to lose weight that fast. You will get really sick if you do. Don't kill yourself. You didn't put the weight on over night, so you aren't going to lose it overnight. I recommend only losing about 3 pounds or so a week. It will seem to go slow, but you'll be thankful you did it safely and didn't kill yourself. All of those miracle diets are usually too good to be true, you only lose like waterweight.