Is It Safe To Have Sex Right After Taking Nordette?

NOTICE ME PLEASE! :( IS IT OKAY TO HAVE SEX RIGHT AFTER YOU TAKE NORDETTE? SITUATION: 2 nights go, my bf and I had sex and he accidentally came inside. I took nordette right away and then we had sex right after (he didnt came).and then I took another batch of nordette the day after. I also took another batch yesterday with the same time I took the first two. And now, we just had sex(he didn t came inside). Will I get pregnant? PLEASE NOTICE ME. I NEED ANSWERS ASAP : ( THANK YOU SO MUCH! P.S. he only came ONCE (1st sex)