Renee - i'm worried for you... please don't get your hopes up! You sound like you are putting yourself under some stress thinking about it so much and that can hold off the period. I think it's more than likely your body is getting used to coming off the pill.. you might even be ovulating now!

You aint gonna get pg if your DF just put it in iykwim... If his pre-cum contained semen (because you had sex earlier and he still hadn't pee'd) well you could, but if he just thrusted for a bit and didn't actually come to an end without a raincoat i just don't see how it's possible.. unless the raincoat broke?

ETA - when you guys DTD without the raincoat, were you O'ing?