I don't have any pain if I walk for an hour or so. I walk to work every day (2 x 20 mins). I take long walks on weekends, but no knee pain after that. I started running. Small distances at first (2.5 - 3 km), then longer ones (5 - 6km). After third day of running long distance I felt pain in outer area of my knees. I wanted to know if this is temporary and if I should see a doctor because of this? Should I stop running or just shorten the distances I run and start lengthening them once my legs are more used to it?
It is definitely not a good idea for you to continue without consulting a doctor or a physiotherapist. Based on my personal experience, I think you should starr by consulting a physiotherapist. They will look at your joints, spine, muscles, etc. They will give you corrective measures and exercises to do. My physiotherapist also took the time to analyze my running and told me how to adjust because I was not running properly. Overall, I do not struggle with sore knees anymore thanks to my physiotherapist!