I am a 27 year old female, not pregnant or breastfeeding.
About 2 weeks ago after having a shower and applying roll on deodorant I felt a little tender in the right armpit, when feeling that area I discovered the lump around the size of a marble but after moving my arm into a different position it dissappeared and could no longer be felt.
It happened again yesterday and tonight same as last time.. after a shower and applying the deodorant. Once I move my arm the lump dissappears behind the muscle.
It's not painful and there is no redness or swelling in that area. I do have the flu which I had had for the past week.
I am unsure what this could be and if I should be concerned?