Hello dear Greetings Regarding your symptoms of fever chest congestion sinus issue cough with side discomfort following treatment with nebulizer and mucinex I am suggesting that you have an acute chest infection In view of this please do the following test Chest x-ray Lung function test Blood culture Meanwhile please see a pulmonologist specialist with the results and and for further clinical assessment and adequate drug prescription Moreover please start the following pending your appointment Steam inhalation Antibiotic Analgesic Multivitamin I hope this helps Regards