Suggest Treatment For Voice Loss, Sore Throat, Dry Cough, And Difficulty Breathing

Hello! My timeline of symptoms is as follows: Friday - sang in a concert, used my voice a lot Saturday and Sunday - lost voice Monday - still a little hoarse but okay, donated blood Tuesday - voice gone again and dry cough began, causing sore throat Wednesday - symptoms persisted Today - cough is more frequent and seems a little productive, gasping for air during coughing fits usually caused by movement or talking. COVID test is negative, and I can t take some cough suppressants due to my anti-depressants. Is there anything else I should be doing?