Dear friend, welcome to HCM.
it clearly is an inner ear
issue. tinnitus, hearing loss
, nausea are symptoms of ? labyrinthitis
.or other lesions
do you have imbalance while walking? and giddiness/ rotation feeling?
i think you should be visiting a good ENT specialist
who is good in middle ear and labyrinth problems.
you can try labyrinthine sedatives/ antiemetics till then.
take care and keep me posted on your progress.
Good luck !