I have moments when i can be just sitting down (as in not getting up so its not the blood pressure thing) and suddenly i get a weird dizzy kind of feeling, it feels like sitting on a boat when someone jumps in, vision shifts left and right, like "the boat" was swinging. My ears also hum. I feel sick for a while and then everythings back to normal.
Then theres moments i see everything kinda differently, i can't explain it, some sort of difference in colours and distances and voices sound like they were in a different room... I had those a lot when i was a kid, kinda scary.
And then there's one thing i call "zoning" out, when i lose a couple seconds, i only notice it if i'm running or something. I got kicked once because of it was running behind my horse way back and then -zap- i was right behind him, ouch that has happened few times while i was driving too, luckily no accidents have happened because of it.
I don't know what any of those are (or are they anything close to what u described) I just take them as part of being weird