I had unprotected sex with my husband (he came inside of me) and I took the plan b pill the same Day only 5 hours later. The following three days we had unprotected sex agian (I know it's stupid) but this time he always pulled out . I was supposed to have my period 3 days ago , so that makes me 3 days late because I haven't got it however I keep haveing PMS, could I possibly be pregnant or is my period delayed because of the plan b pill ?