I am 46, mother of 3 and about three weeks ago I started noticing a dull ache around and behind my nipple. I can't feel any lumps, and I thought it was the ususal pre-menstral breast pain. It is only in one side. No family history of breast cancer, so after reading other sites, thought maybe it could just be pre-menopausal issues. I had a mammogram 3 years ago and it was fine. I am scheduled for another next week. Any input? Has anyone else had this before?