Birth control?

So uhm.. I had sex with my coworker last week and he came a little but I dunno if he pulled out in time or not but I have birth control I used to take but not anymore if I take 2 of the birth control will it be too late if I am pregnant? And if I take 2 isn't it as strong if not stronger than the morning after pill even though it's been almost a week?.. I'm scared to be honest