My three year old's last nursing session was about a month ago after a gradual weaning. Lately I've noticed a spot on one breast that is sore to the touch but doesn't bother me unless I put pressure on it. I was thinking it was a plugged duct but I can't tell where the plug is (it seems to be deeper than the other plugged ducts I've had). If I have a plugged duct at this point, what would you recommend I do to get rid of it? Or are there any other possibilities of what it might be? Thanks in advance.