Sandy, is he getting any better at all? My vet said wait for week (I called him next day it happened) and call him if nothing changes, but he also said it'll take really long time (so you are too impatient!
). Can you take some pics to show us too? Swelling on my horse was really huge for the first 2 weeks, only then we noticed it started to diminish in size. From what read the worst possible thing is abscess if the wound gets dirty, so just keep a close eye on it.
Hope he'll be back to normal in no times. Horse's and pet's health problems are always a nightmare!