About a year and a half ago when I was running I started feeling a sharp pain on the outside of my left knee, I rested a few days and ran again but it came back and got worse. I rested it for three weeks and it was still there but worse still. I went to my GP and he moved it around asking if I felt pain etc and it was fine, he came me some anti inflammatory cream and said come back if it keeps hurting. I rested it for about three months and everything seemed fine again apart from the odd ache during the day going about my normal business, going to work etc. I have started the application process for the army and have been running three times per week to increase my fitness, some short runs and some long and my knee was fine untill I did a 4 miler the other day and I felt the tell tale twinge coming back in the same place. I got home and put ice on it and havent run on it since, which was three days ago. Has anyone experienced anything like this themselves? Have I done damage that cant be repaired by resting, can I run through any pain that might arise again? I still havent got a date for my ADSC so I have a bit of time. Any help is appreciated!