Is this normal? TMI

A few months back my bf and i did anal for the first time with a condom but when he pulled out there was bowl movement on the condom and i was so embarrassed. I showered before and i didnt need to use the restroom at all. And that was the only time we done anal i would like to do it again but im traumatized its going to happen again and its weird cause he wants to do it again too but is it normal for that to happen during your first time? I have a friend thats experienced doing anal and he says to get a wipe and just clean it out before intercourse. But i did that before and there was nothing. Maybe i was so nervous that there was bowl movement? Idk i need help please