My 68 year old father has recently had a chest cold along with that comes the dry hacking cough, he has had this for 3 to 4 weeks, last week he got this sudden onset of pain down left shoulder pain set at around 8 out of 10. That comes and goes, he has been back to the doctors 4 or 5 times. In the last week he has had shooting pain in the lower back and a smothering sensation that comes and goes along with the pain. He is now in hospital undergoing some test but Dr seem puzzled, he also has some fluid overload in heart. ANY SUGGESTIONS