Probably a viral URI: Seems to me that without a fever or body aches, your productive cough and sinus congestion are most likely not from flu but from a viral upper respiratory infection (URI) otherwise known as a cold. On the other hand, with your history of allergies, you could have a secondary sinus infection. If a cold, 70 to 100 mg of zinc twice daily until 2 days after end of symptoms may help shorten duration.
Answered 6/10/2014
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