if you've had 3 chest xrays still showing pneumonia, and you're not responding to the antibiotics, you need a chest ct to look at your lungs in a different, more detailed view. and you might need a visit to a pulmonologist for a second opinion. your lungs and chest muscles work every single second of your life, it means that area never sops moving, so you have got to rest. often, and nap, often.