Ive been having some sore breast for about a week, I just had my period this past tuesday. I noticed day 3 of my period my breast became extremely sore, and swollen, this has never happened before. Day 3 of my period I just started spotting brownish/reddish which my period last for 5 days and the 5th day is when I usually just spot my breast been sore since the third day of my period, everytime I get out the shower my breast starts throbbing and feels swollen even towards under my arm sometimes, my breast has been this way for almost a week even my breast hurt wearing a breast. What could this be