I felt a hard lump under my right armpit about two weeks ago and it disappeared after a couple of days. Now I have a second one which I felt this morning in the shower. Wondering if these are my lymph nodes. I'm thinking of going to the doctor this afternoon while it can still be felt. Does anyone else get this on a regular basis or every now and again? I can't remember ever having lumps like these in my armpits until recently.