HI Im On Birth Control Pills And Ive Had 10

HI im on birth control pills and ive had 10 but then the day i had sex i took the pill 2 and a half hours before the condom broke and he came inside me! AM I PREGNANT? also because ive just started on the pills ive heard sometimes you can miss a period but how will i know if ive missed a period because im still getting use to the pills or if im pregnant? help?