A lot of people develop a cough when they get a cold or the flu. But sometimes that cough can linger on even after the other symptoms go away. If you have had a cough for longer than 2 weeks, you may have developed bronchitis.
So how do you know if you have bronchitis? Well, to be diagnosed of course you need to be seen by a doctor, but you can find some great information on your Cold and Flu site about what bronchitis is and what can be done about it.