I understand the money issue but I'd be getting him to the vet. That doesnt look good and its very likely he's in a good amount of pain from it.
He only seems to be in pain when I put neosporin on it. I am trying to get him to one.
Everyone I know, including me has just paid bills and has no extra to lend me. I am going to keep checking on him though. No sleep for a mama with a sick baby!