I Am Concerned About My Ears Before I Consider Flying

I am concerned about my ears before I consider flying from Glasgow to Johannesburg. I was born with a perforated right ear drum which I now have no hearing in at all,a hearing aid is of no use to me as my audiologist told me. He gave me a hearing aid for my left ear which is ok but I also have tinnitus which makes me dizzy and on looking up it hurts my neck and also makes me dizzy . When my husband was severely ill in hospital, I lost all of my hearing for a week which was supposed to be stress related,
Can you please advise me.
PS - when I first flew to south Africa when I was 41 yrs old, I had to wear a neckbrace because of spondylitis that I had and still have, I am now 67 yrs old.
My email address is YYYY@YYYY