Your immune system almost surely fought off the actual infection within a week. An infection in the bronchial tubes can leave you with inflamed airways. These inflamed airways will cause the coughing. The inflammation also can lead to tightening of the bronchial tubes. You might notice:
- A tight feeling in your chest
- Shortness of breath when you exert yourself
- Mild fatigue
There are other possible reasons for a persistent cough, such as postnasal drip. Also, it's possible that you had a cold and now allergies are responsible for the inflamed airways and coughing.
Although the cough after bronchitis can last for 3 months, contact your doctor if the cough is not getting better after another couple weeks. Depending on the circumstances, I often order a chest x-ray when a person has a cough for more than 6 weeks.
Find out more about this book:Harvard Medical School Viruses and Infectious Diseases: Protecting yourself from the invisible enemy