im 18, last winter I was hit in the back with a snowboard. The snowboard hit my lower back on the left side, right above my hip bone. The pain was there for a month. The pain was a stinging sensation and the skin felt numb. However, there was no bruising. It has been almost a year and I still feel the same pain symptoms once every other week. What is the problem? What could be injured, my muscles, nerves, or bones? Thanks everyone!