If you suspect that you might be pregnant, do NOT go back on BC until you know for a fact that you are not (packaging and instructions will tell you that, too). You only had sex on Tuesday so it is way too early to know.
If you are NOT pregnant, and you ever run out of pills again... if you aren't planning and/or aren't ready for a baby, please make the guy wear a rubber. It will save you a lot of anxiety. (And if it's a temporary request for him to wear a rubber because you're out of pills and he doesn't want to because it doesn't *feel* as good,... just keep in mind for yourself that labor doesn't *feel* good at all! If he's a decent guy, he'll wear it for you!)
Rae (27), DH (26), Lucas (6/3/12), #2 due in December