Maybe the flu or they are calling it a flu-like sickness'have you a fever, chills on and off , cough spasms ,headaches and body aches..drink plenty of fluids, if you feel worse go to the doc I just got over it and they gave me Azithromycin and codeine cough med..good luck
Monitor your temperature, low grade? productive cough? sometimes colds and flu can lower your immunity and/or progress into bronchitis, pneumonia, sinusitis.....smoker? If you continue to feel yucky probably should see your doctor and let him know how your feeling.
if u feel like u have mucus get some guaifenesin that will clear u out and help with the cough as well. also have u taken your temp to make sure u don't have TEMP.