Gym (Yoga) 20:00 
Strange and unpleasant experience after. Got up and couldn't get my balance. After a bit I tried to sit down, but ended up falling over backward. Laid there for a while, and eventually got up very gingerly.
Then I had two more episodes later on, laying on the map rolling the knot in my trapezius with a lacrosse ball. Looking up at the ceiling, the light fixture started moving around in a circle for a while. Waited until it stopped and then tried to get up. Another fail. Just couldn't hold my balance and went down. Then another one half an hour later.
Finally, two more episodes getting up to pee in the night and having to support myself until the vertigo passed.
I'm assuming this may all be related to the fall yesterday and the problem in my neck. But I suppose it could also be the statins that I started taking a couple of weeks ago. Or maybe just nothing, or something else. But pretty unpleasant.