I don't know if this is even breastfeeding related, but as I am breastfeeding (DD 15mo) it might be. Pain started in my left breast during the night and is getting worse throughout the day. Feels bruised if I touch it, but no sign of any bruise and I didn't bash it. I don't feed from this breast (DD could never latch on) but have never had any problems with it. Any ideas what it could be?