3 Yrs Ago I Had Mild TBI From Auto Crash

3 yrs ago I had mild TBI from auto crash with cerebral concussion. ICU for 3 days and 3 more in hospital. Still going to cognitive therapy for some short term memory problems. I recently had my second cervical epidural. During the 1st CESI a few months before the dura was punctured and I was really ill for about a week. Slight ringing in the ears as well that seemed to subside. About 1 month ago I had a sinus infection and gunky ears. Very Mild infection in both ears. Finally went for 2nd cervical epidural about 10 days ago. The ringing in ears is constant, but only few headaches and NOT dramatically ill like I was after 1st cervical epidural.
Should be noted I have had 6 lumbar injections so far this year with no complications.