First of all welcome. I have the same thing but on the right side. My doctor first thought it was my gallbladder, I thought I had bruised ribs from coughing(I have asthma and hubbie smokes) Anyway if this was on the left side I would of thought I was having a heart attack. All the ex rays, ultrasounds and hydro scan came back that my ribs and gallbladder are fine. I still have the pain but I am getting used to it now. I can't offer any suggestions that might help you, but do wish you the best and I plan to read all your replies. I want another MRI in the thoracic area, I am on disability so my insurance is medicare and Medicaid so the tests run on me are not a good as they used to be when I was working and had blue cross, I go to a pain clinic in February. Take care of yourself.