Hello there,,,,well by the history you gave...this very well does look like a case of ligament injury to the knee and strain or bony injury to the toe.
Most of the ligament injury to the knee does take place while abruptly twisting the knee in force while feet on ground.
Next Steps
please do xray of left foot in AP,Lat and knee in AP lat position...MRI for knee can also be recommended as soft tissue injuries are not appreceated on xrays.
Health Tips
your pain may decrease with painkiller but if at all you have a ligament injury and you bear weight on that leg it might worsen the condition...so get yourself examined right away...or do resort back if you have any doubts.