Plantar fasciitis, arthritis of small joints, diabetic neuropathy, hypothyroidism, high blood pressure, over weight, deep vein thrombosis, wrong
foot wear, gout, etc are a few
causes of foot pain.
Do discuss this with your doctor and get yourself examined. You may need to consult an orthopedic specialist and get X-ray and maybe MRI of the feet, nerve conduction studies, blood glucose examination etc. Take care!