I had a cortisone shot by my PCP. I don't know what happened. I've had other shots in my knees by the ortho MD. This time, I am in such pain. It seems to move either right below the knee or below the knee. I hurt all the time. I woke up 11 times in 5 hours last night due to the pain. I have no insurance so going back to the doctor is not an option unless it is an emergency. Lost my insurance. Could not longer afford. What could be the problem. HELP! Should I go and spend $100 for a deep venious test?