The only thing in the world I can think of is so simple: you're not drinking enough water. Try drinking more water. Couldn't hurt. Worth a try!

A couple of years ago, I also felt light-headed all the time-when I was driving, when I got up from the cough etc. I went to the doctor and she told me that I had extremely low traces of iron in my body. Foods that have large percentages of iron in them are: nuts, spinach, and fish. I also took vitamins everyday to bring more iron into my body. After a couple of weeks, all of the light-headedness went away. So, maybe you should try to drink lots of fluids and more iron in your diet to combat any bluriness. Good luck!

These are also pre warnings called tia's that are transic ishemic attacks which are early signs of an upcoming stroke, bumping into walls sudden memory problems, you really should go to your physicians and clear this matter up before something drastric happens. You don't want to have any regrets that could have been avoided. Don't take chances with you health.
'georgie' :d

I have the same symptoms and I was told by my doctor that it is sinus related, fluid build up behind the eardrum.

Go to the doctor....It could be something serious. Sounds like you may be anemic.....