What To Do For The Pain After Plasma Donation?

i was donating plasma 9 days ago, there was slight pain during the donation. The nurse had to probe the vein to get to it. Ever since then there has been a sharp/burning pain starting at my elbow at the point of puncture, and radiating down my arm. It s very painful, and I can t straighten my car without sharp shooting pain. Now I m starting to feel little bumps along my arm. There is no swelling, redness, or discoloration. But it feels like a huge bruise, even when there isn t a stretch on the arm.