NOTHUMB,
Seriously, I would go seek the advice of your doctor. I have had knee problems for years also, and it wasn't until I finally got it looked at by my physician that I started an effective physical therapy schedule and now it is stronger than it has been in years. My problem was a weak joint, and a low amount of cartilage around the knee. I was put on cartilage enhancing supplements, and did specific exercises to strengthen the joint. These worked wonderfully, but for years I had just used braces and ibuprofen, which only prolonged the pain and did untold damage from the pills. Good luck with getting to the bottom of your problem, and may I just say the sooner you get it checked out the better. Take care.
--------------------
MainePBA
"I'd rather be a conservative nut job than a liberal with no nuts and no job."