Mind drifts away during rough sex

When my boyfriend starts to get really rough with me, which obviously I like otherwise I would be in this group lol, my brain... drifts away. Not like I'm thinking about what we're going to have for dinner but I lose the ability to think and my head is just full of this white static and I start to lose touch and cant prosses what hes saying to me anymore. It's super similar to the high I get when he chokes me out but It's happened a time or two before without that, they were close to an orgasm though so I though it was just a better one, which they absolutely were 😂, but recently it's just started happening when he gets extra rough and I'm far from an orgasm, and I take a long time so that means it lasts quite a while. Dont get me wrong, I feel great, but it worries me a bit. I dont know if it worries him because we havent talked about it yet but I wanted to get some input from here first about if this is normal and what we can do to stop it or be safe about it. If it's even dangerous?