I had what was called a "moderate" concussion. For the first for or five days I had absolutely no appetite and a lot of bad headaches. That all died down by, I guess, about five days. A few days after the head injury, though, I developed double vision that lasted for several weeks. Also, what was particularly scary was noticing that I couldn't read when I tried to. I'd always been (still am) a kind of "compulsive" reader (not in the "clinical OCD sense" - one has to be careful these days about what words one uses in such a "mental-health-crazy" culture.
Anyway, I tried to read and it was like there was no connection between what was on the page and what was getting to my head. (This was after the double vision went away.) I was worried that I'd never be able to read again, but because my girlfriend had been killed in the car accident that caused the concussion I just told myself I was lucky to be whole and alive, and I figured I'd figure out a way to read if my ability to read didn't come back.
The ability to read did return, but it was gradual and didn't really get back to normal until at least three/maybe four months later. I was told there was "a little nerve damage" behind the eye, but I could easily see and recognize the individual letters. I just couldn't do more than that. At first it wasn't really automatic. I had to tell myself "in my head" what each letter was; but it was like that's all my head could handle (and not "further digesting" the context within which I'd read the letter). I think (if I recall correctly) it took about two months before the biggest part of the problem began clearing up, and then once it did it seemed like things picked up speed as far as actually reading went.
All I did for weeks for sit and draw pictures of ice skaters and dancers. :/
Hope you feel better soon. Vertigo's a lot worse to deal with than my reading "issue" was. Still, to me, a couple of weeks seems "like nothing" when it comes to a head injury. By the way, my son (adopted from infancy) experienced a skull fracture before I met him. No tests done on him since he was with me ever showed any permanent "issues" associated with the skull fracture.
Try to take it easy and be patient. I know I only have my own "story" and my son's to go by, but I hope (especially if you're concerned about how long you're having the symptoms) I've been at least a little bit reassurring. :)