anal assistance!

Gail

okay so, me and bf have done anal a few times and it's been fine, no shit or anything and it had always been spontaneous so I hadn't cleaned before. But now I'm cleaning - and I'm not fully clean. Is this how it was before and it was fine? Or should I keep going until I'm fully clean? Please help! I'm quite stressed about doing anal again because I don't know if his dick will end up covered in shit! Ahhh!