Im really comfortable in my saddle right now (moved it foward a bit) and I do not want to move it....however my right knee doesnt seem to like it.

Im watching my knee as I spin and nothing is being hyper extended...im coming right down on the pedal...I feel powerful...everything LOOKS right. Can my knee just be in pain right now? Generally if I were to just keep my saddle where it is will my knee adjust or will it destroy itself?