I'm 12 weeks postpartum, and for about a month now I've been getting these little painful lumps in both armpits. They seem to come and go with no rhyme or reason. Is this something to be concerned about? If so, should I call my midwife or my primary care dr? (Wasn't sure if it related to well-woman care, postpartum, or just regular health, LOL!) I can't think of what it could be; I'm breastfeeding with no problems, and not eating anything different. Thanks for any advice!