Am I having a pwave or a prostate orgasm?

I also posted in r/prostateplay but am hoping for some other opinions.

I lay on my side with top leg bent at roughly a 90 degree angle and my bottom leg almost straight. This is the position I generally sleep in so I find I can get very relaxed. I’ve been using an mgx trident. It always feels good, but at about an hour in, that’s when I really start feeling great sensations.

The sensation in question lasts for about 15-30 seconds and feels amazing, but I
don’t have muscle spasms, just a hot, tingly, glow feeling that radiates
from my prostate and feels like it envelopes my ass. I have a difficult time having more than one of these as it leaves my prostate with almost a numb feel afterwards. Not uncomfortable, but feels so “hot” that I can’t distinguish the different sensations I was earlier.

One reason I’m asking for clarification is a few times when something starts to feel really good, my heart rate speeds up dramatically, but then I lose it. The sensation I described above doesn’t increase heart rate very much, doesn’t have me breathing hard, and doesn’t give me muscle spasms.

I’ve read people talking about their involuntary body twitching and
their breath taking orgasms, and can’t help but think that the thing
I’ve been thinking is a prostate orgasm is just a pwave. Or am I having
prostate orgasms, just not a super o?

Thanks for your time, any information is very helpful.