I have a small pea sized lump in right armpit adjacent to red warm area. The lump is sensitive to touch. Last night I awakened every few hours as it hurt sleeping on my side and arm down. I had to raise my arm and sleep on my back for a more comfortable position. Last week I Wendy to my physician when numerous red bumps were on both armpits. Stopped antiperspirants, wash arm pits morning & night. All red bumps are gone but this new lump with red patch under arm appeared in last 24 hrs.