chastity release and enjoyment while wearing a device

I’ve been wearing a CB6000s for some time now, with my wife/KH letting me out roughly once a week. Today I was really horny and she wouldn’t give me any relief, so I put on some porn and attempted to relieve myself while still locked in the CB6000s. I’ve done this before, but it wasn’t very pleasant then either, which is why I rarely try it again. Besides, what’s the point of being in a chastity belt if you’re just going to jerk off anyway?

Anyway, here’s where things stand: I managed to get there, or at least it felt like I did. There was some relief, but not much more than that, and essentially no ejaculate came out. Maybe a drop or two, but certainly less than I expected.

It felt okay overall, but I’m worried—has anyone else experienced this? Is there an issue where the ejaculate doesn’t release properly and backs up into the body? I probably won’t try it again, but I’d like to know if others have had similar experiences and whether they caused any problems.