Throbbing?

Hey so um like I just flicked the bean and like usually my clit doesn’t do much so I rub a another certain area but like for some reason I ended up rubbing my clit a different way and I was like OHHMYGOOOSHH my legs were twitching and like then it stopped and now I can feel it pulsating along with my legs like the blood is pumping through there

1) what just happened bc I’ve never oragasmed before and idk if that happened

2) how do I make the pulsating stop bc it feels weird