How did your VM first start?

I'm super curious to know how others vestibular migraines first started and what symptoms you had etc?

For me I was just sitting on my pc one night gaming when the room span for a few seconds

Also one night I had a dizzy spin, there was a section of my vision that was blind/blurry

If I looked at the center of my monitor and moved the mouse cursor to the bottom left it would disappear

Anyone else with a similar experience to mine?