My left knee started giving me problems in April 07 after a couple of months and no running, it was fine. It has been fine even with all of my running and 5K's I have done. About 1 week ago it started to flare up again. Today it HURTS. It is so tight in the back of knee and achy. So I need to ice it tonight and then going to have to see how it feels on Sunday, since I am suppose to run in a 5K. UGHHHHHHHH.

Oh no! I hope your knee gets better! Be careful not to blow it out on the run! Maybe you can wear some type of support. Good luck!

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All that I am, or hope to be, I owe to my angel mother- Abraham Lincoln

I had a similar problem when I first started, that is so painful!! I hope it gets better by the weekend!!

That sounds painful. Be sure to rest it and listen to your body. If you still aren't a hundred percent on Sunday don't push yourself. Wait it out and do a 5K when you are healthy again. I wouldn't want to beat your time unfairly!