advice?

i really didn’t know what to title this topic.. anyways. i just have a few random questions & need advice. so first one, i may sound stupid asking this but how do you know if you’re actually having an orgasm? my boyfriend & i were doing stuff at his house. like i was grinding on him, which really gets him on. & i could already feel myself getting wet but i wasn’t moaning really loud & didn’t feel myself release if that makes sense. when he started to finger me i could really feel how wet i was. just don’t know if actually i’ve ever orgasmed? thanks!