abnormal pap .. STD!??

okay so i went in today to change my birth control & i guess the doctor had called me back almost 2 weeks i had gotten my first shot (DEPO) which was in May. anyways she told me that i had an abnormal pap & i have to go back in next week & she said it might be an STD. i've been w/my bf for a year & has been the only guy i've has unprotected sex with. & she told me that he has to go in & get checked for STD. he has gotten checked before & didn't have any. i'm very overwhelm .. should i be scared??