I am 35 weeks pregnant with my first child. I noticed a bit of crust in my nipples. My nipples are not leaking but from time to time, a few months now, I ve notice this crust. This crust is black as my nipples, so I don t assume it s milk. I pick it out my nipples; there is no pain, and it reminds me of cleaning out my belly button. Could you tell me what this is? I m a 34 year old, black American if that helps. Thank you.