I am also experiencing this symptom and am post menopausal. Also my breasts feel fuller...not what I am seeking! I exercise regularly and I eat pretty healthy. I get MRIs and Mammograms - one or the other every six months due to being considered high risk and have dense breasts. My mom had breast cancer- they think due to HRT, she does not have the breast cancer genes. I was only checked for a couple but didn't have them either, but seems me and my sister would not have that either. I am due for a mammogram soon..I believe it is this month but not sure. I don't take HRT.