I was out in the water the other day, and was trying to climb a rock wall. At one point my back was to the rocks and a wave came and smashed me into the rocks hitting my lower left side of by back right below the ribcage and near the spine on a corner. It s still pretty painful 2 days later, walking, bending, even just readjusting my sleeping position. It s a deep pain, like it feels similar to a pulled muscle. I ve been told there s no bruising around the area, is it something I should be worried about?