how to tell if you've got a blocked milk duct?
['a lump in one area of your breast.', 'engorgement around the lump.', 'pain or swelling near the lump.', 'discomfort that subsides after feeding/pumping.', 'pain during letdown.', 'milk plug/blister (bleb) at the opening of your nipple.', 'movement of the lump over time.']