Hi - Pain down your left arm could be a sign of a hiatal hernia. Does it feel like you are having a heart attack? That is how my hiatal hernia was detected. I thought I was having a heart attack and the pain was in my check and ran down my left arm. Just something to think about. Happy Holidays!
this is where pancreas pain is, as for down the arm could be a reactive pain all nerves are connected, you very well could of pulled something. If it doesn't get better, I would have a blood test done to check amylase and lipyse levels these are enzymes of your pancreas, if elevated pancreas is not functioning well. Let us know what happens. Kaya