I had sex about two weeks ago. 4 days before my scheduled ovulation. He pulled out as usual (we have regular unprotected sex and he always pulls out) but for some reason he went back in after he wiped off. When he realized what he had done (about 20 seconds later) he stopped. My period is about a day late. Are my chances of being pregnant high? I didn't think anything of it at the time but now I'm paranoid.