Beginner success checking

I've done mindgasm for 4-ish lessons. I got rushes / fast passing shivers every 2-3 seconds going up my body and much increased heat rate while holding base at 5 and doing a sort of ping pong between my center and top moving in a circular-ish pattern. Are these p waves? I didn't take it a lot further even though I think I could have, as I was quite taken aback by it.

This is after a couple of weeks playing with aneros progasm and some other toys and getting totally nowhere, no idea where my prostate even is, can't even feel it. I'm pretty proud because I also have absolute zero visualization skills (aphantasia), wasn't in any kind of aroused state, nothing really felt sexual, I was hardly even breathing properly - though I'll learn to do that better I'm sure. But it all seemed to work.

The first sign of anything seemed to be a very faint pitter-patter sensation inside my groin which I thought was just the aneros moving around a bit.

Thanks to the great resources here that helped me get this far