Help 7 weeks and no running

Can anyone help me, about 9 weeks ago I had problems with tight hamstrings, calves and tightness behind my knees and cramp one morning behind the knee. Reduced my running to a couple of runs a week for 2 weeks. Last run was 7 weeks ago during which I was struggling with tightness and my left knee was sore. Since then I hadn't been able to run or exercise. Inside of the knee aches and i get a burning feeling. also tingling and bit of numbness feeling. Hurts when lay on my side and sitting down. Doesn't bother me going up and down stairs. Walking makes it ache, burn, throbbing and a tight feeling again at the inner side of the knee and and behind. My hamstrings and tendons feel stretched. Doctors and physios cannot find any ligament damage or knee damage. Last one said its a repetitive strain injury from how i run and I have strengthening exercises for my glutes and quad muscles but no improvement yet. Does anyone have any idea what this injury is?

....it's got nothing to do with your knee!

You're getting pain from a Saphenous Nerve issue, but the cause is you've got the worlds tightest thoracic spine....get this bit to move more.

Look out for slouching at work, run tall and think good, but not stiff, posture.

Thank you, I was thinking it was nothing to do my my knee. The tingling, burning and aching is painful plus I had a London marathon place. Bit of a shock no running for so long. Would this explain this weekend I only went shopping and a concert but limited my standing. Next day walking was painful with tightness and burning around knee area. Any treatments you can recommend? I can't wait to go running again.