Embarrassed :(

Husband and I tried anal for the first time last night, it was my first time ever. He was great, went slow, worked me up etc. It actually felt surprisingly great! I'm hardly sore today and I was expecting to be in quite a bit of pain. So, all that is amazing but after we got done last night, he got up and into the shower. When I got up, I noticed there was poop all over down there... I was so embarrassed, I had gone to the bathroom a couple hours before. I mean, I know it's where the exit is but I wasn't expecting that! Is this a common thing? Any advice for when we try again? He never said anything and I don't think it bothered him but it sure did me!