Still Oing After Session

Hey everyone. I'm new around here, but I got my first Helix Synn about three weeks ago. I had relatively good success with it right away, and eventually had a full-blown super O after about the fifth or sixth session. Anyway, I had to create a new account now because I finished a session about fifteen minutes ago and I'm sitting here still feeling the sensations of the O! It's kind of blowing my mind. I was planning on going to the gym afterwards but I think I need to wait this one out. Has this happened to anyone else before?