For the last few days I've had sore breasts. Both of them. It started about 7 days into the cycle, so can't even say it's premenstrual. It's weird. I'm used to sore breasts in the days before periods, not any other time. I had a 3D mammogram a few months ago and all was fine then. Is this a possible perimenopause thing? Anyone know? Late 40s, regular and normal cycles still.