Well, the vet examined Emmett for free. His scrotal sac is infected. The vet sold me a week supply of antibiotics, and I have to come back for two more weeks worth. The vet said if the infection does not go away they may have to do surgery to remove the scrotum.
I hope the antibiotics work. I even got a cone collar and Emmett is wearing it. He sure looks cute, but none too happy. Thank you all for your support.