I've had a lump in my armpit for last 3 months, doc checked my breasts, no lump, sent me for an ultra sound, I got the all clear there, was told it not lymph node, also took a course of anti biopics which brought the size down a little and the pain stopped but the lump is still there and now I'm noticing a constant smell of body odor from that armpit, showering deodorant nothing gets rid of the smell. I don't really know if I should go back to my regular doctor or what to do. Could it be a blocked sweat gland?