Vastus Lateralis or IT band?

Pain when landing on right foot above and to the right of right knee (about area of a softball). I generally have flexible quads and tight hamstrings and I have no idea how loose or tight the IT band is, but I can stretch it with no problems. Pain(more uncomfortable straining feeling than anything else) began 1 mile into a 2.5 mile jog (my runs are all slow), and 2 days after a 5K. Day after 5K was a stretch day.

Anybody have Vastus Lateralis pain experience? Only happens when I run, and is getting better but still occurs.