sounds like cellulitis to me,if it is stocked up and he is not lame…means that perhaps infection entered at the puncture site and migrated into the tissues. Will got this last august, and it seems to happen every time now.
Interestingly, the first vet didn’t treat Will’s properly-he hosed and iced and wrapped…duh. I called in vet number two and we got antibiotics and knocked it down.
I would at least soak it again and wrap the hoof to keep it clean if I were you…until the next vet can come look at it (this is an “if I were you” kind of thing)…jmho
“Perfect practice makes perfect.”