My grandmother is suffering from weakness since 3-4 days. Post that, she had cold which gone down in 1-2 days. Today, suddenly oximeter reading of her Index finger in right hand showed 84 level of oxygen (without any symptoms of cold or fever) . According to her, she is breathing quite normally. Also, today she  heard an unfortunate news of demise of some close relative, which also making her feel anxious. She is under medication of Tab Pregabid 50 mg, Tab Lupirtin P, Tab Dycical Max on daily basis. I know her covid test must have been done by now, but that couldn't happen. What can be done now??