I'm having trouble with an extremely tender spot on my breast. It feels like a really bad bruise or a plugged duct, but there aren't any lumps, swelling, or redness. I'm currently nursing an 11 month old who is recovering from the stomach flu, so she barely ate anything for a day (I pumped a couple of times) and now she's back to nursing exclusively. She usually eats lots of solids but hasn't started them back up yet. Any ideas about what this could be and how I can make it feel better?