My girlfriend is experiencing breast pains on the side of one of her breasts, she saids this pain apperas when she touches this area on her side on the breast where she felt some little balls, so i'm wondering what it this? Is this cancer? She is 31 years old and she has two daughters, and several years ago she had some some balls of fat removed of different parts of her body may this be what is bothering her? or is this just some other thing?