Me and my boyfriend had sex the other day. Bit of a rough session lol. A few minutes after, I started to see speckly bits and it got a bit dark, I assumed head rush. But then it just went completely black. My boyfriend ran to get me water, and I then realized I was unable to breath out. I started to gasp as I panicked, but was still unable to breath out, and my chest was getting tighter and tighter. My hands were shaking violently, but then suddenly all went back to normal within a few seconds. And I felt fine! My boyfriend told me months previous, that a girl had passed out on him once after sex in the past. I wonder if this is the same thing? And I wonder if it might be to do with the fact he has a very large penis and was being very rough?