I got a nerve test and emg about Jan. 18. I have the date at home. Since the test I still have pain and swelling off and on near my right knee and right hip. The last 2 weeks it is not as bad but I still take pain pills and use ice off and on. At the beginning the pain was so bad I was limping. The test did say I had nerve damage on the right side of L5. Why do I still have pain from that test?