sounds like a growth of some kind take him to vet and have it removed dont let him suffer with it
Hello and welcome to the forum. Were you going to upload pics here at MedHelp? It might be herpes, but impossible to say for sure without seeing it and even then, would only be a guess on our part. I think what you might try is calling your vet and see if they would be kind enough to take a post dated check? It would only be a few days and wouldn't hurt to call and ask. I've been waiting for pictures, but maybe you weren't able to figure out how to upload them here.
Please post an update as soon as you have some answers!