Its too long until i wait for my period to try the pregnency testers?

i had a 3 days ago and i have had a protected with condom but im kinda scared. i have had with fingers and when i had real , wetness was dripping down my place. when with fingers, it isn't as usually wet so i was kinda afraid it might of been his semens. is it too late to take the birth control pills because i think it will take too long if i wait for the tester?