CHEST CT - Pneumonia but RT PCR is -ve.

CT Scan result "multifocal patchy ground glass opacities seen diffusely in both lung parenchyma, more on the periphery and posterior location. Sub pleural bands seen in postero-basal segments of bilateral lower lobes. Moderate to severe infective etiology (most likely viral pneumonia)." C-Reactive Protein: 196mg/L, ESR: 94 mm/hr, Lymphocyte: 13.4%, LDH - 257 U/LAfter seeing CT, Doctor said this is corona, though I mentioned that RT-PCR test is NEGATIVE. He asked to admit the patient immediately. SPO2 is around 89-91 since 5 days. Slight fever of 97.5 in evening since 2 days. Breathless and coughing on walking. No coughing while resting on bed. Extreme Weakness. First symptom shown on 3rd August. Testing done on 10th August. No loss of smell and taste. Loss of appetite. Please see blood reports and CT attached below. Thinking of going for Antigen test tomorrow. Father was in close contact but not showing any symptoms. prescribed - Doxy, ivermectin, pan 40, magnex forte, Dexona, vit C