Pregnant & period!?!??

I had sex with a guy I know last tuesday, and by the end of it we found out that the condom had broken, meaning he came in me. Now, I'm on the pill as well, but sometimes I miss taking it or take it at different times, I also come from an extremely fertile line of women, so I know there is definitely a possibility I am pregnant. What I'm wondering is, I have still been taking my pill since it happened (still dodgily though), if I were to stop taking it to induce my period, and it comes, is there any chance I could still be pregnant? Because it's not a 'real' period. Pretty much just want to know if I stop taking my pill complete my to get my period earlier than it would normally be, will it determine if I'm pregnant or would there still be a chance because it's not a natural, real period. Btw it's too early to take a test to know!!