I'm afraid I did something stupid. A few days ago, I was running and decided to double my distance (in a hilly area no less), because I felt I could. My endurance was fine, and I felt good while running the extra distance. But when I got home, I started to feel a dull pain in my knee caps, one of them more than the other. The next day, I could feel the dull pain when I walked, especially walking down stairs. The following day (today), I don't feel the pain when walking, but it feels a little tight when I bend at the knee. It's not debilitating, I wouldn't even bother taking an advil, but I don't want it to get worse.
Is this just my body trying to adjust to the increased mileage. Or do I have runner's knee? Does this mean I need to stop running for a while, or can I just revert back to my old mileage and everything will be ok?
Thanks for any help figuring this out.
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