Hello, earlier today I was going on a leisurely run when all of a sudden I got a very intense, sharp pain in my upper back, stretching to my rib cage and causing me to lose my breath. I was able to sit down and that eased the pain significantly. As the day has gone on the pain has lessened, but no significantly. It is very difficult for me to move, especially when I try to turn to do something. What kind of treatment can relieve this kind of pain? Thanks in advance.