Hi ladies. So...my right breast has been really sore since around O. Like if it gets touched or my right arm goes over it, it hurts. My left one is a bit tender as well, but not nearly as sore as the right. Is this common or unusual? I tried to google it but didn't really find anything about just one breast being tender. I guess I might try wearing a different bra tomorrow and see how it is in a few days, or if it goes away by AF time.