how to tell if you have a viral sinus infection?
['Sinus pressure behind the eyes and the cheeks.', 'A runny, stuffy nose that lasts more than a week.', 'A worsening headache.', 'A fever.', 'Cough.', 'Bad breath.', 'Thick yellow or green mucus draining from your nose or down the back of your throat (postnasal drip)', 'Fatigue.']