I had it at Thanksgiving. 30,000 mg of Keflex fixed mine. It took 9 days, 3000 mg a day, of the 10 day supply of it, but it was gone. No lingering cough, no nothing. It was the worst case I guess I've ever had too. The head congestion was horrible.

If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then will I hear from heaven and will forgive their sin and will heal their land. 2 Chronicles 7:14