I came down with a respiratory infection of some kind overnight about ten days ago and it had me flat on my back for three days. I am still coughing, though not as bad. My 12 year old son has the same cough now. I was thinking it was bronchitis, but I wonder if it might possibly be a mild form of pertussis? My son and I have both been immunized against whooping cough. Maybe we have only a partial resistance.
It can be very misleading. It starts out "mild." Get to your doctor and insist on him taking a culture. If you and your boy are able to whip it early enough, you will both be spared months of debilitating coughing bouts and possible secondary infections, pneumonia, etc. Don't mess around with this. It can wipe you out. Keep us posted.