I went diving two weekends ago and noticed afterwards that I loss my hearing in my left ear. Moreover, I have severe (incessant) tinnitus. I went to the dr. the next day and he prescribed decongestants and Pseudoephedrine. After two days I went back to see the dr. (due complaining about pressure) and he conduct a hearing test and b/c of the results he perforated the eardrum and removed some fluid. He said I had fluid and profound hearing loss he proscribed steroids. This was more than a week ago and I have not had any positive change in regarding to my hearing or the ringing.

Could have my dr. diagnosed my injury wrong? Could I have damaged/blown my round and/or oval window (s)? Would this mean permanent hearing loss? If not, on average (range of time) how long is the recovery time ?

Thank you in advance!