Pneumonia.: With your symptoms you have at least an upper respiratory infection and could have pneumonia. The feeling in your back can be from pleurisy. This is the irritation/inflammation of the plural lining of the lung and can be from infection. The light headedness could be from decreased oxygen secondary to the infection. If you feel really bad see a dr. U may need a chest x-ray, and antibiotics.
Answered 1/2/2014
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