Prostate orgasm when does it end

Hello,

Pretty new to all this prostate play. I’m doing it solo with the helix trident. Today was the first day i felt like i was doing it right. I was pushing and pulling the toy in and out with my muscles. I would start to kinda shake and more parts of my body started to twitch (kinda). After moving like that for a little i had trouble realizing if i orgasmed or if i was just shaking. It didn’t feel as good as when i orgasm from jerking off. Idk if i should have keep doing it for longer or if that was it and to stop and what’s the super o and how would i achieve one??