What Causes Pain And Tingling Sensation In Legs After Epidural In L5 Area?

I had an epidural in the L5 area. I had a severe shooting pain down let during procedure. After I got home an lidocaine wore off, I had leg pain and tingling intoes also nerves were jumping. All night next day still full let pain. If he hit a nerve with cortizone will this cause permanent damage and pain as I have?