I am having a stabbing pain in my right trapezius muscle through the lateral aspect of my right shoulder blade by my rotator cuff. It is more of an awareness of discomfort that turns into a stabbing or shooting pain when I take deep breaths and my lungs are close to full expansion. On full breath expansion I am also having right sided chest discomfort about mid chest area, below the breast, that started laterally, early this morning, but is more medial now. I am not sure if the pain is radiating from the chest to my shoulder or vice versa. I am wondering if it is a pinched nerve, but don t want to ignore something much more serious. Symptoms started about 4am? I am an ICU nurse and move patients (including my shift last night) as well as recently restarted back at the gym. I lifted upper body weights last on Friday December 29th.