Sinusitis after covid infection. Days.

Please ans my query. Last month 19 started covid symptoms. HRCT 6/25. Recovered in home without using steroids. Non diabetic sugar levels fbs100 plbs114. I am having sinus problem for last 12 days. I had sinus and allergies earlier but these symptoms are for the first time. I did not have any imuno compramising complications in the past. Symptoms: left side mild tenderness above eye which is on and off. Mild tooth sensitivity in cupsid tooth of upper jaw for last three days which is on and off. Nasal endoscopy does not show any black ness. Nasal swab tested for fungul stain negative. Attached recent CT and MRI report. Is it sinusitis then how many days it takes for the symptoms to resolve. Completed Two rounds of anti biotics till now. Anything to worry. Please suggest. No nose bleed, block, discharge, swelling on face in these days..