i had some knee pain on the outside part of the knee. only hurt when i was riding. a sharp pain. but off the bike there was no pain at all.
ended up going to a physical therapist and she had me do some knee, leg stretches. turns out the knee with the pain was due to over used and tight muscles in my leg. this was causing my ITband to get inflamed against the knee when peddaling. i began a 3 week strethcing routine: 6 different leg stretches each day. she showed me which muscles i had overworked and showed me how tight they were. after the first week i could tell a difference. now that i have been stretching daily for 3 weeks i decided to give the bike a try. i was able to do my normal 20 mile loop with no pain whatsoever.
my advice for one who had struggled with knee pain for 2 months:
1. get re-fitted on your bike
2. check cleats
3. see a sports medicine DR; or physical therapist