Did I orgasm

I was masturbating and I felt this shaky, tense and somewhat.. itchy feeling in my vag? The itch was like needing to pee. I kept going and I felt this vibration of tingly pleasure that radiates all the way to my feet. I know it sounds like an orgasm, but I’m still confused on why I could continue afterwards? Most people say that their area gets too sensitive and they have to stop but mine felt fine.