Yeah, I may not be understanding G forces correctly, which may be part of my problem.

And worrying really seems to be my problem. But just a few hours ago I tapped my head when entering the car (I'm having rotten lock with this), and even though I was super anxious, I was able to convince myself that I didn't have any immediate symptoms. And now I'm feeling fine. So i think I may be heading in the right direction worry wise!