My fiance came home from basic on the 7th of march...we have had unprotected sex everytime since hes been home. i got my period on the 9th but we continued to have sex unprotected and my period only came for 3 days. i took one BC pill but didnt take anymore because we are trying to get pregnant. he is only home for 7 more days then he ships out...what do you think is there a possibility i could get pregnant?