Recognizing a prostate orgasm?

I’ve had an Aneros — one of the basic models — for years now, but I’ve generally only used it when I’m doing things with my wife. I finally decided “What the hell” and tried giving the HFO a shot.

Until last night, I’ve not had much luck. I’ve been practicing my muscle control but it’s still very difficult for me to clench in a gradual and controlled fashion. It feels nice, but it doesn’t do much beyond that. Plus, for some reason it’s sometimes difficult for me to remain hard when I’m being penetrated: I have to be *very* turned on for that, and concentrating on the aneros makes it difficult to maintain that level of arousal.

But last night, I put it in early and left it in place for an hour or two ahead of time. We had some pot last night, and I was feeling nice and relaxed, and was in just the right mind space to keep myself good and hard. And then something happened. I was convulsing a little, making noises that I don’t normally make, but it didn’t feel…orgasmic. It felt really good, but not nearly at the level of a full-blown orgasm. Nor was it as satisfying as a regular orgasm, not by a long shot.

So, not sure. Am I on the right track, do you think? And what can I do to achieve something better?