knee clicking but no pain

[Shera]

i recently started doing a bit of jogging...one minute walk one minute jog for 10 mins before my weights and ten minutes after. been doing this for about two weeks now four times a week. well today i noticed as i was walking up the stairs at my gym my left knee was making a little clicking sound. but it wasnt hurting so i just ignored it. tonight at work i was walking up stairs and it was clicking even more like 2 or 3 clicks per step but still no pain. should i be majorly concerned? maybe stop jogging?