How many calories do i burn if i nurse 4 times a days each breast 30 minutes?my baby is 70 days old and am 33 years old

Approx. 500/day: About 500/day while your baby is exclusively breastfed (no formula, no solids). But, to meet this energy need, the institute of medicine recommends eating 500 calories extra a day. It is important that the calories come from nutritious foods, especially meat-type foods for protein and iron and dairy products for calcium. Breastfeeding mothers can usually lose 1 to 4 pounds per month.