Pain in arms after vaginal delivery?

Is this normal? I was thinking maybe from an iv but pain is in both arms. The pain is in the area between shoulder and elbow💪🏽 emoji for reference. It’s so sore it’s so hard to lift somerhing light. Also my back is very sore as well. I can’t even reach behind my back to clip my own bra. Anyone else have this soreness? Know what is causing it?