Coming back after a short break, interesting sensations

So I took kind of a break after christmas from Aneros. In reality, I switched to the Nexus Revo 2 and the Levett Caesar because they made me feel really good. So I wasn't using Aneros for a month or so. Then, I just didn't feel like prostate massaging. Don't get me wrong, I wasn't frustrated or bored, it's just that I wanted to enjoy traditional for a while. And so I did. I jerked off with a vibrator for more than a week and it was amazing.

The thing is, I haven't cum in more than a week, and yesterday night I was quite horny and felt like massaging my prostate. I had flatmates and I didn't want to use anything noisy. Besides, I kind of wanted to use the Aneros. So I inserted the MGX. This is where these feelings begin.

Let's see if I can explain myself. It slides right in without any problem. Then, after two minutes or so, I begin to have this feeling of pleasure that comes with a sensation of wanting to contract the kegels.

The best way of describing that feeling is, when you go to the dentist, and the dentist is working on your open mouth, although there's a tube that pumps your saliva out, you still feel the need to swallow. That feeling can become very overwhelming, and you finally have to do it. That's the feeling I was having.

At the same time I was feeling a very pleasurable sensation on my prostate area. I would assume it was p-waves? The sensation was kind of continuous but maybe it was wavy, I can't say now. The thing is, I tried really hard not to contract my kegels, because when I do that, the sensation starts fading. The mixture of pleasure and the sexy frustration of having not to contract made it very pleasurable. But I contracted a few times because I couldn't bear it anymore. It faded away in the end.

I'm happy with this sensation, though. Have you experienced anything similar to this? How would you describe my experience?

Edit: By the way, although I was quite horny yesterday, I didn't cum. I didn't even feel the need to. Normally I would end up a session cumming, but I think it's better this way, I still feel sexual energy flowing! Sometimes it's difficult not to cum tho, but I'll try to separate prostate from penis.