Progress(?)

It's been a while since i used the aneros, i finally got my helix syn the other day, not the syn trident. For the first session with it, it was quite surprisingly good! Within 10 minutes my legs were already shaking, and eventually it got to the point where i felt the toy being sucked up quite hard into my prostate within 20 minutes, and i wasnt voluntarily doing it either. I was more harder then i ever have been in a long time when it was happening. Then comes yesturday, I had my syn in for like 5 minutes relaxing before i suddenly felt that warm sensation in my pelvic region/prostate grow again but going away, what does this sound like? am i slowly working my way up to the super O?