I am 35, 5 5 , 180lbs. Had a normal delivery on 11/21 and have been breastfeeding. Last week my gallbladder was removed (lapro). Hospital stay - 3 1/2 days, due to high WBC count. While hospitalized and on pain meds, ran out of stored BM and had to use formula for a few days. I am back to breastfeeding and have noticed a slight brown vaginal discharge Is this anything to be concerned about