My boy freind just bought me a WD Monday he is very active eats well is using the bathroom every morning at the same time, not in the water though, but he has a small lump comming thre between the scales around his jaw, it looks like a white grain of sand with a pinkish tint a little bigger then the end of a pen. I have an appointment with a vet on tuesday but if anyone knows any thing about this and could save me the trip that would be great.