You should definitely take him to your doctor.
Thanks for writing to HCM
He should have shown signs of improvement by this much time.He has already completed two courses of antibiotics.
You should definitely take him to your doctor.His pleural fluid should be aspirated under USG guidance and routine examination of pleural fluid including culture should be done.
There are many causes of non resolving pneumonia
like resistant bacteria,pneumonia due to other causes like tuberculosis
Pleural fluid examination can guide the treatment.Tuberculosis should be excluded in his case.
If necessary he can be prescribed injectable antibiotics.
INR is in the upper range.
Proper treatment depend upon present clinical findings and investigation reports.
Get well soon.
Hope i have answered your query.
Further queries are most welcome.