after i trained in the gym and went for a swim yesterday i felt fine. but as the day went on i developed a pain across my chest, but no soreness to touch. when i went to bed last night i found it hard to sleep as my breathing became very shallow and chest area was worse when lying down. when i try to deep breathe i can only get half my normal air in. i had pneumonia last november. im a non smoker and 48 yrs old. i use a seritide 500 morning and night as a prventative measure.