Coughing is a dominant symptom of bronchitis; people only see it as a cough and generally don’t seek medical attention as it is a weak and short cough. Doctors prescribe rest, fluids, and mild cough medicine because it generally goes away naturally. Along with the cough, phlegm production begins between 24 to 48 hours after. The phlegm may be white, yellow, or green, although if it is streaked with blood, you should see medical attention promptly as it could be a sign of something worse. Other symptoms include chest discomfort, wheezing, and feeling of breathlessness, a low-grade fever usually in acute cases, chills, runny nose, and difficulty breathing, and in both acute and chronic bronchitis fatigue due to coughing and congestion interrupting sleep.