Strange order of operations

If I feel myself getting too drunk and like I’m going to throw up soon, I usually just excuse myself to pull trig with the thought that I won’t be (as) sick later, or get even further past a point of no return. But the past couple times I’ve done this, it was at least 30 mins after my last drink, but it’s AFTER I throw up that I black out.

The past couple times this has happened, I wake up the next day not remembering anything past throwing up. Has anyone else experienced this, or have any idea why this is happening? I never throw up involuntarily from drinking, just forcing myself to when it starts feeling bad. I hope this makes sense lol. Not looking for advice, I’m not worried, just wondering if this is an original experience