It isnt just protein and carbs that are important, its overall caloric intake. There is a calculator on the Nutrition page of this program that shows how many calories, grams of protein and carbs you need, as well as fats. I personally dont use it because it says I should be eating 472 grams of protein and carbs with an overall caloric intake of 5400.

Yes, thats why your only working out 4 days a week. Your burning it off. I know its alot but try to eat more.