Question: I'm a 62 year old female recovering from having a total right knee implant. My initial one of 13 years got infected when I came down with strep pneumonia almost one year ago. I have gone from being wheelchair bound, to being able to get around short distances with a 4 prong cane, & at home except for stairs I can navigate without assistance, but I do go slowly. I am also using a rollator for longer distances when I leave my house. I'm currently receiving physical therapy. And in spite of doing all of the exercises, I still find that my strength & endurance is not what it should be. I tire very easily, & get short of breath. I also note that I still have edema of both feet and ankles. I am on lasix which helps some & I also use a rescue inhaler. I was hoping to go back to work in January, but am not really sure that I could endure a 12 hour shift. I do not think my current problems are related to my surgury, although my overall endurance wasn't helped by this. Where should I start? Should I consult the surgeron (who still has to give me a note to "clear me for work"), my family doctor who I see regularly, or my pulmonologist?. I was wondering if this could also be cardiac. (no pain, just shortness of breath & fatigue). Any suggestions? Thank you.