About three days ago i woke up with horrific nipple pain and discovered what i believe to be a friction blister from pump i couldnt wear a bra and the thought of someone touching it made me cry this morning i noticed what looked like a pimple head and popped it with a sterile needle foul smelling pus came out (ive been hand expressing it and throughout the day i have been draining and cleaning it.) Morale of the story make sure your pump fits and you use breast balm