Sawa, I do not have vertigo. That would drive me bonkers, too! But, you really need to tell your doctor about that bad bump on your head. From your description, it was quite severe and whenever you hit your head that hard, you need to be checked out to see if you have a concussion. You want to be safe...not sorry. So please contact your doctor and tell them what you have told us. I imagine he would want you checked out.
I do hope this all goes away for you. It easily could be the swelling in the ears. I know when fluid backs up in my ears I get very lightheaded.
Sherrine