I recently saw a mother with a tiny blister on a nipple skin tag which grew during the pregnancy. It did not cause her any pain, and was filled with clear fluid, not milk, so I wasn't worried about plugged ducts. We worked on positions that would minimize any further friction on the nipple tip and the problem resolved. She also used a little bit of an ointment for moist healing during the healing time. Just looked up "ovine" and it is of or relating to sheep. Carla (just north of Washington, DC)