So my SO and I have recently started experimenting with anal and are loving it. Sunday morning we did it, with no protection, but he didn't finish in me. we cleaned up and then about and hour or so later we did it again, again he pulled out but was on top of me and finished on my ass. We cleaned it up pretty quickly but, being me, I am incredibly nervous some dripped down to the other area... I urinated and washed up in the bathroom and then showered as soon as I got home, but am nervous. Should I take plan B while I'm still on