I took next choice about 12 hours after unprotected sex and after he ejaculated inside of me. A week later i had tender nipples and it lasted about a week and i figured it was due to the pill. Days later my breast got really tender and full and sore to the touch. I've been completly exhauseted. Its been 3 weeks now since i've taken next choice but i got my period 2 days early but it was reallyyy light and bright blood not even enough to fill a pad it lasted 3 days could i be pregnant?? i still feel tired and nauseated throughout the day and have headaches!! :(