What was this funky nausea/dizziness/blackout that happened to me last night?

Yesterday blew ass, I was fairly hungover all day. Not hungover like I puked every 10 minutes. In fact I didn’t at all. It was more of a head/body hangover. Anyhow….I felt like shit all day…around 5 I started feeling better so I ate a delicious burger and fries and some candy and felt pretty much back to normal. Then, last night, while watching Purple Rain, probably around 9, 9:30…I got up to make popcorn. I was using the whirlipop and standing there talking to my boyfriend….right as the kernels started to pop I got extremely nauseous and dizzy. About 10 seconds later my vision started to go…it was like it was slowly being taken away and black dots were taking the place of what was actually in front of my eyes.

So I walked into my bedroom and I guess I layed down on the floor and….“fell asleep”...because when I “woke up” my first thought was “I have no idea where I am”. Once I looked around and saw I was in my bedroom, I went to the bed, and laid down, and then I was fine.

It was so weird and nothing like this has ever happened to me before, what was it?