I think I may have strained my left trapezius. I had been having a mild off and on pain centered around my left shoulder blade and radiating to the left side of my neck and top of the shoulder. I had worked pretty hard doing shrugs a week ago then about 4 days later the pain increased it really started to bother me constantly. Rolling over in bed is really painful. I haven’t done any lifting at all in the past week. I pretty much ruled out any pinched spinal nerves.
If it’s spasm’d / tight, which it sounds like it is, then yeah, all that nerve impingement caused by the spasming muscle is on the table
Been there, done that a plenty
No worries
In time, the muscle will stop it’s tightness / spasm and you won’t have the knife / nerve pain
You strained the muscle, so it spasms as a defense against being used more, protect itself from more injury … in the process, it’s squeezing on nerves
A really, really hot hot-tub will do wonders for relief. But overall, it’s time and non use so it can calm down