I'm a 38 year old woman with a strong family history of cancer. My mom and first cousin both had breast cancer which spread. My brother- leukemia and a first cousin-lupus. I have a positive AnA and a mass in my right breast with an enlarged lymph node. My mammogram and ultra sounds shows nothing because of dense tissue. But my breast ache like a toothache sometimes. My breast has drawn up so my right breast is shorter then my left significantly. Should I be worried?