I have two large painful lumps under my right armpit. I am 34 yrs old/female. My breast produce a clear/sometimes milky fluid (I am not pregnant) the breast leakage has been going on for a few years. My Dr ordered a mammogram. The results were clear, however the Dr said I had very dense breast tissue and did have a hard time reading my results. These lumps are painful and do move a little, but I have had them appear (on same underarm) on a few different occasions, but never this large or painful. Just for further information for you, I have had 1 live birth, a healthy 11 yr old and 2 miscarriages.