P waves?

Yesterday i had a new session with my aneros helix syn, once again i prepared as usual – butt lift pillow, lube injector, some audio binaurals, chastity cage, rubbing my nipples and the first two mindgasm sessions.
I started the kegels with the first two mindgasm sessions, after i plugged in the aneros. I started doing my kegels again pulling the middle and base muscles at the same time and causing involuntary contractions, i had some pleasant sensations with my legs shaking and rubbing my nipples sending good stimuli to the prostate.
Then, a strange feeling started, my body started to tingle and the temperature dropped like an icy shock, I became more breathless and felt butterflies in my stomach, the aneros was hitting harder but slower in the prostate causing intense sensations down there. This icy shock continued and came in waves, i had several of them during the two hour session, i felt satisfied even though i didn’t have the progress i already had of shivering and full body shaking from the previous two sessions but i believe that nature and beauty of the prostate massage session is this – finding out which way is the chest at the end of the rainbow.