breasts SUPER tender and im EXTREAMLY tired all the time

im only 20 yrs old and both of my breasts have been very tender to the touch for the past 5 days now, but have gotten LESS tender as the days pass by, but still are just as swollen, about a half cup size bigger. iv also been very EXAUSTED lately, taking a 2-4 hr nap almost daily, iv been on the same birth control for the past 5 years now (yasmin), and i have never experianced these symtoms (symptoms) ever before, im not due for my period for another 9 days though, anyone have any advice????? Thanx