I was trying to push a piece of wood free and pushed it into the inside of my wrist. It was a bit red and very slightly swollen but not really painful. I've had nerve pain from my palm to up above my elbow since then. It's been aching and feels like throbbing pulses moving around too. Is this normal and how long will it take to go away? It hardly hurt at the time but it's starting to annoy me now.