2nd try!

Hi there, I’ve been lurking on the thread for a few weeks after regaining interesting in prostate play. I started a few years ago with anything I could find to no avail obviously clueless. I decided to get a helix syn this week and had my first session but nothing as I was struggling to relax and weed is a no go for me. Just had my 2nd session and after abit of nipple play I began to get rock hard for a few minutes then nothing. Then it happened again and my head went fuzzy and then got a bolt of fuzz all over my body 3 times then nothing… Any ideas what that was and any tips moving on? I cant seem to get involuntaries.