I did 3 laps of the red route at Sherwood Pines on new years day. I think I might have overdone it a bit with doing the 3rd lap as I have not been cycling that much over the winter. I felt OK at the time (just tired). However, later that night, I strated to get pain in the back of my knee (in the crease where it bends). It was painful to walk and painful to pressure. The pain is not severe but it is still there almost 2 weeks later. I have not been cycling since, so it has been rested. Anyone had similar injury and any idea of recovery time?