Sounds like the pneumonia had time to really take hold. Even assuming that Levaquin® (levofloxacin) was the appropriate antibiotic, as it often is for mild-moderate community acquired pneumonia, you may require another course of Levaquin® (levofloxacin) or another antibiotic. If you are at all clinically improved and/or there is x-ray evidence of improvement in the chest x-ray, you could safely, "give it a few more days." The continuing trouble taking a deep breath and shortness of breath with one flight of stairs is worrisome and suggests incomplete resolution of the pneumonia. Since 2 weeks have passed and you remain quite symptomatic, it is time for a repeat chest x-ray.
If you are still raising phlegm, it would be wise to ask your doctor to send a sample of it to the microbiology lab for culture.
Thanks for your response. Went back to doc was sent to pulmonologist, am awaiting a battery of test for eveything from lung problems to liver disease to kidney failure. If you are out there reading these post like I was , trying to figure out what is wrong with you, turn the computer off and pick up the phone and call your doctor.