me and my boyfriend are RIDICULOUSLY strict about using protection during sex. But last night one thing led to another and we did not use a condom, he did pull out before he came, and told me not to worry because he got all of it. my period is due in 6 days and I'm well out of my fertile window but since I'm high functioning and worry about every single possible little thing you could ever imagine, I'm kinda panicking. what are my chances of getting pregnant? or should I get plan b?