How to compensate for working out

I am a 27 year old female weighing 123. I have some weight to lose still. I’d like to lose about 8 pounds and tone up/define. I am using insanity for my cardio but am not seeing a difference in weight or anything for that matter. I watch what I eat. trying to kick the sugar and carb habit. However, I am still unsure of how to figure calories when I am working out, in order to ensure I am getting the right amount to benefit. I don’t even know how many calories I am supposed to eat to begin with. Then on top of that how many I burn doing insanity and how many I need to add back in to balance out my caloric intake. I really need help. I want to get rid of this fat in my mid section and other areas so I can work on toning up and getting more muscle definition. What am I doing wrong?

You definitely do not want to eat more calories to compensate for working out, or else you will not lose weight! The idea is to create a caloric deficit… eat less, train more. 3500 calories = one pound, so with that being said, I would start calculating your food intake and see how many calories you are currently eating and then swap out higher calorie foods with lower ones, so you are eating less calories, but still eating enough through the day to keep your metabolism going… every three hours. Make sense?