I got Pneumonia once, and it happened because I had a head cold.
As the sinus mucus drips down the throat (post-nasal drip), it can also infect the lungs.
Know that. So yes, the Doctor said that his chest congestion probably came from his bacterial nose infection.
I have Asthma and allergies. The medications your son took, is to alleviate bronchial airway inflammation. But it does NOT "cure" an illness or infection nor get rid of the mucus. Asthma meds such as Xopenex and corticosteroids, are to open up the airways. It is to open up the breathing passages so that the person can breathe and not suffocate.
Coughing (and mucus and congestion) can originate from:
1) The Nose: post-nasal drip
2) The Chest: chest illnesses
3) Or both
His body aches, makes me think he had a Flu? Plus he's had fever for 11 days. That is a long time.
Fevers occur due to infections or Flu.
Over the weekend and even now, I am sick.
A cold... but it also gave me body aches. I also have laryngitis and general body aches is also one of the accompanying symptoms.
So, body aches can accompany many things.
Try putting an air purifier in his room.
Also, if one type of antibiotics does not work, then another family of antibiotics needs to be used. Each person is different.