burning sensation near my lung and lower back when i breath or move my arm

hello, i have just started having a burning sensation near my left lung and lower back when i inhale or move my arm, it doesnt happen all the time just occasionally, usually right when i get out of bed, i had brohncitis last week and was treated whith prednisone. but then i just now started getting the pain and it comes and then goes

[National Jewish]

To find out the nature of the problem that is causing your pain a thorough physical exam needs to done by your doctor and perhaps a chest x-ray.  Only after finding the problem that is causing your symptoms can you be started on the most helpful treatment.  This may or may not be related to bronchitis that you had last week.