Without seeing it, it is a bit difficult. i would trim the nail back a bit, not to the quick, but back enough so the other toes/nails offer relief. It takes time to heal, and as Sandymere says, a few days of metacam/rimadyl will be great. I have had the same injury on my dog last season, the toe was rested for a couple of weeks and actually formed a hard callus. Rest is important. I have not had any trouble since with that toe, it's as good as new, despite the lump.