My 15 week old puppy has had a nasal discharge since yesterday. The discharge is greenish in color and slightly thick and mucous-like. I really only see it when he's sleeping and it's enough that I need to wipe his nose. There is minimal discharge when he is awake. He doesn't seem to have any other symptoms. No diarrhea or vomiting and his energy levels and food intake are normal. I do want to take him to the vet, however we purchased pet insurance and have two more days left in our waiting period. Any health problems brought to the vet during this time period won't be covered and could be listed as pre-existing conditions and not covered in the future. If this is a serious problem I'd take him to the vet now regardless of the cost and future consequences, but if it isn't serious I'd rather wait two days. I just don't know what to do.....any advice?