Been having on and off problems with my left knee - not while running or walking, but stairs and after sitting in one position + swelling behind the knee (which feels like fluid). Been getting worse since going back to school last week, so went to he docs this morning. Undergoing some investigation - she thinks it's probably osteoarthritis (I have this in my neck already) and a Baker's Cyst, but had x-ray and awaiting ultrasound to check. I asked whether I could continue running while waiting, but she said no, just in case it is something else......
...so no running until results are back....☹