Leg Pain Behind Knee A Very Weird Pain In My Leg... Behind The Knee?

A very weird pain in my leg... Behind the knee? - leg pain behind knee

I received this strange pain behind the knee. It is not too painful, but painful enough to slow me if I'm running. It hurts especially when walking and climbing stairs. I thought it would be back by itself, sooner or later, but no ... was about 2 weeks. It is as if something bites into the bone, when I go. It can be a pain in the bones, but who knows what will.