Hi Ann,

I had the pain underarm too and along arm and fingers and a lot of pain on the side of my ribcage about 3 months back.
Deep tissue massage on the affected side of the rib cage ( I think has to do something with the serratus anterior) and also some self massage with a soft foam roller as well as pinky ball self massage for the under arm and all along the entire arm taught to me by my physical therapist Dr Art Ando of Ando and Aston, Anaheim Hills CA has helped me tremendously and taken away the above mentioned pain.