Can you have pneumonia but not be sick or been sick?

I have been having chest pains for 3 weeks. Started out of the blue. I have not been sick or even feel sick. I just have chest and moderate back pain under my right shoulder blade. I have seen 5 doctors. No one can really explain the chest pain however my CT scan found "bibasilar atelectasis as well as developing infiltrate" and "ground glass opacity with in my right lung" (where I feel the pinching and stabbing pains) my dr has put me on a heavy dose of steriods and antibiotics along with pain killers. They suspect pneumonia. But wouldn't I be sick? Wouldnt I have a fever or cough or something? I am over weight and have a irregular heart rthyum so being out of breath is nothing new. I am planning to see a pulmonologist if this treatment does not help. What are your opinions? No I am not a smoker but my husband is.

[David Tinkelman, M.D.]

While this is not very common, viral pneumonia can be fairly mild in some people. However, there are usually some symptoms such as cough, low grade fever or weakness.