More new sensations!! Help

If you saw my last post I detailed the new sensations I had. I just got done with a two hour session this morning with my Progasm. I had more new sensations. I started off doing nothing and eventually had some very slight P waves (other poster described) or some tingling. I began doing some contractions and got some more little sensations but nothing new other than what I experienced yesterday.

Here are the two occupancies in my session that I need help understanding

1. About a half hour I went from on my back to on my right side in a wider version of fetal position. I lay there for a little bit doing nothing and eventually just did some random contractions of different intensity. Things started to feel different. I decided to hold perfectly still and hold the very light contraction. I’m laying on my side eyes closed with the contraction held and begin to start feeling some tingling in my arms and legs. It then intensified to a rock hard feeling in my pelvis and I had the sensation as if my pelvis was a balloon being slowing inflated with air. My palms got sweaty and my legs, arms and hands were starting to really tingle and feel hot. I felt waves of warm pleasure working it’s way up my arms and over me. I held the contraction and then my heart was racing and pounding. I just lay there quietly panting. It eventually subsided.

Later in the session, this happened

2. I moved back to my back with legs bent. I spread my feet apart and had my knees touching. I began to thrust and then I got that floating feeling and the same sensations again that I just described as I contracted and held. This time my head got foggy and my ears just started ringing and my face was hot. I had a feeling like I got a sudden rock hard erection, but I didn’t.

What just happened?