Yesterday I was trying to see how much milk I had in the morning, just for my own curosity, and when I squeezed my nipple, puss came out of one of the holes. It was thick, and whitish. I had been having breast pain, but I figured it was just from trying to build my supply up enough to feed her once a day. On other "holes" of my nipple (other places where the milk can come out, not sure what they're really called) there was black stuff, if I squeezed really hard and kind of scraped it, I could get it to come out, but then more would come into my nipple too. What is this? My other breast is fine, no black stuff, no puss, so I went ahead and nursed her on that side, but not the other one. Anyone know what the heck this is?