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This is Dr. David
you need to go to the ER or urgent care center
and get a chest xray and sputum culture to check for bacterial infection.
you most likely will need a course of antibiotics
the sputum culture will be able to tell if there is bacteria in your sputum and in your lungs.
you shouldn't be taking old UTI antibiotics for yourself if you don't know what type of bacterial infection you have.