I have quite a firm lump in my armpit. Will call doctors tomorrow, but would appreciate others experiences please. I'd like to think it's a reaction to shaving (I shaved using a cheap razor last Sunday (hadn't used that razor before and it had been in the bathroom cupboard for God knows how long) then the following day my armpit felt so sore on one side, then really tender and felt the lump the following day.) But health anxiety and the possibility of it being something else wants to convince me otherwise. I can't see the lump but can feel it when I poke around and it feels sore.