Hip jerking??

So last night my boyfriend and I were doing things and I ended up having a really intense orgasm- so intense that I was having aftershocks. I thought nothing of it until it was hours later and my hips were still twitching every few minutes. Even now, almost 12 hours later, my hips are still jerking. I’m not really sure what’s going on, as I don’t really think that orgasm had anything to do with it.

Any thoughts?