In all seriousness, you should put some iodine or peroxide on the cut if it was cowered in mud and event from a rusty sewer cover, keep an eye on it and feel better.
Don't worry, y'all. I had on-site medical treatment, and filled out an incident report for use at a later date in court if the "injury" progresses to something more serious such as infection.
I hope you don't loose a leg. A friend of mine's wound once got infected and got to the point where it was a flesh-eating disease. They had to amputate it. KEEP A CLOSE EYE ON IT.