is this a plugged duct? we went on a long trip where we skipped a few feedings b/c we were on the go so much and he fell asleep in the car. the other day my nipple hurt so i still nursed on that side but not as much. i thought he had bit me. he only nurses like 4x a day and 2x a night. now that breast is sore. do i have to nurse every 2 hrs???? i'm prego and don't want to if i don't have to. what do you guys think. i don't have a fever. i cant tell if there is a lump or not.