I have had everything that you have mentioned. The sudden short term silence is weird. Since it never lasts, I have not paid much attention to it. My tinnitus gets loud after I have had something to drink. Cold or room temp does not make a difference.

I even know the pitch of my tinnitus. It is between C6# and D6 on a piano.

Have you been checked out at a hearing and balance clinic?

As Theta said, what diagnostics and treatment have you had?

You doctors' vagueness is to be expected. Most doctors have very limited acceptance of concussion as a diagnosis if you did not lose consciousness or have some sort of altered consciousness.

What were your symptoms immediately after the impact and what symptoms developed over the next few days ?