Omg what was it? It felt bomb af!

My bf and I had sex like rabbits yesterday and the last round I was riding the shit out of him then all of the sudden I got this feeling in my vagaina that made me go crazy it felt so good I couldn't move idk if it was an orgasm or did he hit the g spot? Litterly I've been think about it all morning it makes me horny even thinking about it lmao so did he hit the g spot or did I orgasm?