No, it was not a sub-concussive or concussive impact. And, it is not the cause of your symptoms. At the worst, you may have twisted your head as you were putting it on or for some other reason. If you truly have difficulty walking, you need to be checked out. But, I believe your symptoms are the result of your anxieties.

Again, you need someone to help you with your thought processes. There is a therapy called CBT, Cognitive Behavioral Therapy. It teaches you to direct your thoughts in positive ways when a troublesome thought comes to mind.