I had asymptomatic (only fever)  corona in  Augest 2020 my thorat becomes red and one small blisters arises on throat .. I dont feel itchiness while eating or drinking nor irritation in the throat but after doing salt water gargle i feel that some phelgum is stucked in thorat ... My blood Oxygen level is 98% ( i can hold the breath for 1 minute too) and dont have fever ...i can smell the things and i do have have taste qualities ... No shortness of breath ..but I have gas problem and getting hard stool and its painful ( doing sitz bath of KmNo4) I m taking Azicip 250 and dolo 650 tablet..please suggest ? Is that symptom of corona ? Any medication require?