Over A Month Ago I Injured The Left Ribs Playing

Over a month ago I injured the left ribs playing sports and caused an oblique strain and back strain on the left side of my body. After an xray was taken, there was no indication of a fracture. However, after a month of healing, I noticed two adjacent ribs on the left side and near the outside of my back it feels bumpy where the ribs on the right side feel smooth. What could be this be?