Ever since my boobs inflated and then shrank (bc breastfeeding 3 kids) I noticed these little guys arrive. My fingers are covering my nipple in each photo, but you can see these little dark dots. I obviously give them a squeeze when I get a chance, and something comes out, like gunk and sometimes a hair. They are always there on both sides. Any ideas of a) what they are and b) how to get rid of them? I of course like to have a constant supply of something to pick at/squeeze/ investigate but it's not super attractive.. ideas?