I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past, I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.

Not me, though. I'm a coward.

>...and the lights give me a headache

Okay, so I can't help with the supernatural stuff, u/fainting--goat, BUT, I might have some advice that will help with the lights because I have the same problems. A lot of times those lights are fluorescent. One of the solutions that works for some people is tinted glasses, but finding the right shade of yellow/orange/amber/whatever can be tricky.

However, since you should have free student healthcare through the university, you might consider having your eyes checked because another thing that can cause those sorts of issues--which you wouldn't really notice unless you were constantly in front of a screen...ooooooooor under fluorescent lights and looking at a screen--is eye problems. In my case, for example, one of my eyes is the teensy-tiniest bit nearsighted and the other is the teensy-tiniest bit farsighted (we're talking -.25/+0.25 levels of tiny). So I see near perfectly and basically have 20/20 vision, but get headaches when I'm on the computer or reading a lot, and it's more prominent under fluorescent lighting. If you tell the optometrist that you're having issues with screens when under fluorescent lights, they can know to check for the really slight differences that they might otherwise overlook as margin of error. And be HONEST with them. Don't guess when you're not sure of a letter.