question: Have a medium pain in my right side, under my rib cage in line with my arm when arm is extended straight down . The pain is also felt in my back and under my right breast bone . The pain increases with each breath I take to the polnt the breath is shortened and the pain is compounded if I lay down . I am a 66 year old male in fair physical condition , l walk do yard work without any muscle discomfort. I am recovering from back surgery last Dec. and a full left hip replacement in April this year , but I m sure the operations have nothing to do with this pain . Thank you for any information you may provide .