Thanks for your question on HCM.
I can understand your situation and problem.
If you still have no improvement even after taking 4days course of antibiotics.
This suggest that antibiotic is not working,
In my opinion you should,
1. Get done repeat chest x ray
2. Sputum culture
Repeat chest x ray is needed to know whether pneumonia
is worsening or not.
And treatment of pneumonia should be guided on the basis of causative organism.
So, we need to first isolate the causative organism. So, get done sputum culture and sensitivity to isolate the causative organism and guiding appropriate antibiotic treatment.
Haphazard use of antibiotics should be avoided as it actually delays the recovery and increases the risk of drug resistance
So, consult pulmonologist
and discuss all these and start appropriate antibiotic according to sensitivity report.