Orgasm or not?

I'm curious about an event that happened to me in May 2015. I was voice chatting some guy on an app thats no longer around and something weird happened that I still can't describe to this day. his voiced turned me on obviously but during the voice chat my hips started to throb immensely. eventually it got to the point where I couldent lay comfortably. about 10 minutes after this feeling I had a feeling like there was a rock between my hips and it was even more unconfortable. Suddently like cracking an egg... WOOSH the feeling finally surpassed and I was able to fall asleep. the next day I was so tired and was scared to think about sex because the slightest thought mildly turned me on and the previous nights events scared me because I didnt want to feel that uncomfortable feeling again What happened to me?