My boyfriend and me had sex in december and i had to take next choice, the we had in the beginning of march and i had to take next choice again, and then we had at the end of march and I took next choice again. After taking next choice the last time i got my period the next day April 1st and it lasted 2 weeks and 2 days. However till this day May 14 i still haven't gotten my period. Can i be pregnant?