Cm question?

Brianna • Mommy to a princess . happily engaged to the love of my life . looking for mommy friends .
So last night me & SO had sex . He came in me but it was super late so I just cleaned off with a towel & went to sleep (daughter wakes up early lol) . I've used the restroom a couple times already but this time I got a lot of CM which looked like EWCM . But I'm confused is it my SO cum or cm ? Any ideas ?