My baby is almost 6 months old and we have been battling with oversupply and plugged ducts since the beginning, it has not been a fun experience, but we are hanging in there. Recently I have been getting a weird pins and needles pain in my breasts after he finishes nursing. There are no other symptoms...no white spots on him and my nipples are not red or sore or burning or anything. We have not been on antibiotics. Can thrush develop only inside the ducts before it is ever on the nipples?