my partner says my areola's have gone alot bigger and in each breast theirs a big long vein... but when taken a pregnancy test it comes back as negative.. we had intercourse 2 times on one day.. 2 days later went toilet wiped but their was only abit of blood on tissue that was it.. 2days after that i had cramp like period paib in my lower stomach for nearly 3 days and now my areola's... WHAT COULD THIS BE?