Fear of mucormycosis. Out the disease.

Sir I had covid infectoin 20 th april. I have recovered with antibiotics and multi vitamins at home. My recent fasting blood glucose is 100 and random glucose level is 150 after recovery. Im having sinus issues in past. Now from last three days I had little heavyness under and above left eye. I have consulted ENT specialist and he has done nasal endoscopy. No signs of blackness seen in the nasal endoscopy as well as in throat. Some normal infection is there in nose.  He told me it may be acute rhinosinusitis. Does rhinosinusitis cause pain above and below eye on one side. I never had this in the past. I m now prescribed anti biotics and anti histamin and using. How many days it may take to come to normal. It is very mild pain but Im getting very tensed because of the black fungus news. Please advice me. Does the endoscopy test rules out the disease.