I have right low back pain, sciatica, which is usually treated and relieved with chiropactic care. Last month it s been down leg around lateral knee, behind knee. Had about 8 adjustments, now it s down in calf. Pain in calf all the time, worse when walking. I can t straighten my knee. Pain along lateral knee is still there intermitently. I walk with limp because of pain. Wondering if I should see MD..not getting better.