I am very concerned now, darn internet! I am 32 years old, mother of four, youngest is 22 months old and still nurses once per day. I have had a pea sized white lump under my left armpit for over a month now, and its slowly getting larger. It is not tender in any way, but getting larger. Add to this that after an email I got today, I realized that the extreme itchiness that I get between my breasts and my armpits could be a bad symptom. I also get sharp shooting pains, nerve like pains, from the back of my breast to the tip, on occassion. Non of this has come together in my head until now. Please help! Opinions needed. Cancer in general really runs in my family as well. Breast and ovarian. Im probably making an appointment soon.