Me too. It happens to me off and on throughout the day and when I'm laying down with my eyes closed. I used to have vertigo (felt like twirling around) also, had a surgical repair done on my inner ear and don't have that problem anymore.

I also have elevated Intracranial Pressure (ICP), discovered during the ear surgery. My eyes are always blurry for a while when I get up and off and on throughout the day, especially after laying down. I know that part is from pressure on the optic nerves from the excess fluid. I am quite certain the raised ICP is from my concussion, I had no symptoms at all prior to the injury.

My doctor had me try vestibular rehab early on, it didn't help me at all because there was physical damage in my inner ear. I know others have been helped by it though. It's probably worth giving it a try, you'll be able to tell if it's helping and stop if it's making things worse. Good luck!