Male ejaculation confusion?

Kristine • 30`s lady trying to conceive for the first time. Loves animals and works in the veterinary field.
Has anyone's partner not been sure if he ejaculated? It's the weirdest thing. My husband and I were doing the BD and all of a sudden he stopped and was like, "oh, I guess the stuff already came out", but it didn't sound like he had an orgasm or anything and he wasn't even 100% if it happened or not. He said it didn't feel like there was anything left in him that he needed to get out? What? We've been together 8 years and this has never happened. I'm so confused and a little disappointed because I'm ovulating and I was kind of looking forward to making a baby today! Hahaha