There is a very small, tender lump, on my breast. It isn't visible, but I can feel it. It's on my upper/outer breast near my armpit. I don't want to jump to any conclusions about what it could be. My family does not have a history of breast cancer or cancer in general, and I have never used tobacco nor does anyone I associate myself with. I'm 16 years old, so I do not get mammograms at this age