I'm not thrilled with the way the cockpit moves around as you fly, it makes it really really hard to see important information on your display/gauges. also makes me feel just a tiny tiny bit travel sick. I wish that was lessened and wasn't quite so severe.
When you look around your ship, to check pannels, request docking and whatnot, it's precisely when screen tearing becomes more severe, to the point of creating motion sickness due to the image tear and stutter. And from what you've just mentioned, it seems to be the case with you (Slight headache/stomachache?).
Some can bear it more than others, but everyone will have to deal with it, until FDev fixes the issue.