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Your symptoms point to a infection in lungs or pneumonia
which if not treated immediately may develop complications like pleural effusion
or empyma which occur due to collection of water and pus in lungs respectively.
So kindly don't wait and self medicate. It's best to consult a physician or pulmonologist
for early diagnosis by X-ray and blood test
and then appropriate antibiotic treatment.
is an antibiotic but ther might be resistance to it if the symptoms r not relieved.