I have 3 kids. I know I'm not pregnant because I have had a hysterectomy but my breast, well mainly nipples are very sore like I have been breast feeding. But my youngest daughter is 4 so that's not it. I am worried because it has been about 2-3 weeks that it has been very sore to even touch. Could it be something wrong? I mainly worry about it because my grandmother past away from breast cancer and my mom has had knots but I'm not sure if it was cancer but I know she had them removed.