I have recently had 2 total hip replacements in 4 months. I had a chest cold after 2 no surgery and have, since developed a shortness of breath especially upon exertion Walking etc... Prior to my total hip replacement surgeries I was unable to walk for 6 months. I also gained about 25 lbs during this time. I am wondering of the shortness of breathe could be due to my stamnia or could I possibly have walking pneumonia. I do still have a cough and feel tired all the time. The shortness of breath is my biggest concern.