anal?

so last night I did anal with my boyfriend for the first time (it was his first time also) and let me tell you, I LOVED it. I thought there would be poop but there wasn't any in the moment only when I went to the restroom after and a let the air out haha but I thought I'd have the fart at school but no!? everything's fine! I don't feel pain or anything. how was your experience like?