Duct Work: Unplugging a Block

I spent most of last weekend texting pictures of my side-boob to my friends. Is this a plugged duct or an insect bite? 

Thankfully, I have friends who support me through these sorts of messages. I recently became accredited as a peer breastfeeding counselor through Breastfeeding USA, which might explain why I have so many friends willing . . . → Read More: Duct Work: Unplugging a Block