Calorie Cycling

I started about 2 weeks ago. I am using the cycle from this site -
http://www.freedieting.com/tools/calorie_calculator.htm
I am doing Insanity and had lost no weight during the first month eating even less than what the nutrition manual said I should. I put in that I was working out 5 days intense into this calculator and it gave me a cycle. I am eating those calories, not "eating back" calories because my workout calories are accounted for already. I guess you could put in that you are sedentary and then eat back what the calculator gives you plus any exercise calories. I have lost 3 pounds in the last two weeks after losing nothing for a month.