I woke up with a pain under by left breast,that hurts when i take a deep breath. I had a massage this weekend on Saturday, and she did lot of work on my back, particularly my upper left shoulder area. Is there any connection? Some say it may be related to exercise but I did not go to they gym tho weekend,so I worry that a it can be something more serious. I am a 60 year old woman and healthy weight, no medications.