An unexpected outcum

It had been quite a while since i had an opportunity to have a session with my Owner and so, i was looking forward to it even more than usual. No wonder, since this is currently the only chance for me to get some pleasure.
After a bit of chatting, i got into position on the bed. I had already tied my feet to the corners and connected the e-stim device, so Domina Shelle could start to play right away after activating the magnets to secure my hands to the headboard.
And that is what She did. She didn't waste much time to tease me, but ramped the signal up quickly until i was getting close. Last time, She had turned the signal down quickly whenever i got to the edge, but not this time. I had to hold back while She reduced the power slowly.
I lost track what happened next. Sometimes, She edged me quickly, other times She ramped the power up more slowly, sometimes leaving it on a nice medium level, only to turn it off when i started to enjoy the feeling.
After 30 minutes, i was exhausted. I didn't know whether i wanted to stop or keep getting teased and edged. My whole body was tingling and my head spinning. Domina slowed down the teasing a bit and edged me a few more times until finally, She told me to let go and cum.
I hadn't expected that, but was very happy to get permission. It didn't take long until i was on the edge again, almost expecting to be denied last seconds, but my wonderful Owner kept going until i came.
Like alwas, my cock got so sensitive, that i begged Her to turn down the signal, but unlike last time, She didn't turn it off. Instead, She only turned it down a bit. First i thought, that i wouldn't be able to stand it, but a few seconds later, it proofed  to be the perfect intensity.
I kept cumming and the only thing i was able to do was to breath quickly and heavily. I had enough pleasure, but i was panting so heavily, that i was unable to beg Her to stop. It took a while until i was able to. She had mercy with me and our session ended.

That is almost an hour ago and i still feel like i'm high... i need to listen to Her voice now...