I have the same issues mine starts before my cycle and after but worse in the middle of my cycle my Doctor told me to lay off caffeine and drink a lot more water closer to my cycle and through my cycle to help and it's been working pretty great. Also was told I have a lot of fibrocystic changes during my cycle anyone else?
I actually have sore breasts after my period routinely as part of the hormonal shift that is taking place. Good times. Love being a woman . . . ha ha. I didn't know about the coffee anniebrooke! Ido drink coffee. Anyway, I'd mention it to your doctor when you have your next gynecological exam but wouldn't worry about this at this point.
Drinking a lot of coffee can do that. So can an ovarian cyst.