Am I eating enough or too much?

I often wonder if I am eating enough, too much or not enough. It is all so confusing. I average 1200 net calories per day, sometimes more sometimes less. I workout 4-6 days per week for an hour to an hour and a half per day and burn anywhere between 500-1000 calories per day. Most days my protein, carbs and fat are equally balanced but somedays my carbs are around 50% and fat and protein are equal. I have lost 7 pounds and would like to lose 5 more. But these 5 seem impossible to get off. Any advice would be appreciated!