Breast Cancer Signs and Symptoms include breast lumps or a lump under the arm, tenderness, breast pain, a discharge from the nipple, change in breast size or shape, redness or pitting on the skin of the breast. If any of these symptoms are present, visit your doctor.

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Breast Cancer - Symptoms
Breast Cancer - Symptoms Symptoms Knowing the signs and symptoms of breast cancer may help save your life. When the disease is discovered early, you have more treatment options and a better chance
http://www.mayoclinic.com/health/breast-cancer/DS0...
Signs & Symptoms
Signs & Symptoms Generally, early breast cancer does not cause pain. Even so, a woman should see her health care provider about breast pain or any other breast cancer symptoms that do not go away.
http://www.nationalbreastcancer.org/About-Breast-C...