I had surgery on my mouth about three weeks ago. I was unable to eat the first two days, then I was only able to eat yogert and pudding for the next three days. I lost 15lbs. In less than a week. I was laid up for 10 days. I returned to work for a week and had to work 50 hrs. Then the following week i went back to work on Monday and was feeling good when I got home. Then Tuesday morning I woke up and had some extreme pain in my right leg. I went to my doctor wednesday and he said he thought it was bursitis and gave me a prescription for ibuprofen. Things were getting better until today, Monday I tried to go back to work with the use of an ortho type knee brace. Within 15 minutes of walking around I had severe pain in my knee, my thigh and my calf. I had to remove the knee brace, but it was to late the pain has gotten worse. What is causing my leg pain and should I seek immediate attention?