Hi welcome to H.C.M.Forum. otosclerosis
it self is a disease of dizziness
and loss of hearing. you would not have noticed. post operatively due to manipulation of ear you had symptoms. it appears that you did not attend the follow up check ups or did not use the follow up treatment. lastly could be failure of the surgery.still if you have any doubts you can present before ask a doctor
now. thank you.