I've been reading on kellymom.com and I'm trying to figure out what is the culprit of my uncomfortable nursing. I've posted a thread regarding this, but can't seem to find any advice. Both of my breasts are very uncomfortable when I'm nursing my 14 month-old DD. I even have a blister on each nipple! I thought that maybe it is a plugged milk duct, but it seems like it's something that only occurs on one breast? Then I thought, what if it is mastitis? But I don't think it's that serious. I even thought that maybe it was just her teeth digging into me while nursing, but my breasts/nipples are sensitive even when I'm just wearing a shirt. It's really uncomfortable to nurse and my breasts feel engorged all the time!!! I'm trying to nurse as much as I can, but it just hurts after a while. Please help me out...anyone else have this happen?