I have been doing at home physical therapy (based upon previous Physical Therapist s instructions) for pain beneath my right kneecap and lower back hip for about 3 months, but am now experiencing moderate pain, tingling, and minor numbness (somewhat like temporarily cutoff circulation) behind my right knee as well as in my right foot for approximately 1 week. Could this be a circulation or nerve-related problem? Could the pt be causing the pain, tingling, and minor numbness? Should I discontinue the pt ?