I Have Severe Pain, Numb Sensations And Swelling In My

I have severe pain, numb sensations and swelling in my left foot and it hurts to walk or stand on it. I had two tarsal coalition bone fusion surgeries in 2014. First surgery in April 2014 resulted in a non- Union, so I had to have the surgery redone in December 2014. I've been doing very well post-op, but suddenly started to have severe pain, numbness, some swelling and additional stiffness a week ago. The problem is getting worse each day. I am not diabetic and recent, extensive blood work showed good cholesterol levels. I don't smoke and have lost 93 pounds from weight loss surgery over the last 5 years.