dr. appt. in 2 days. Lump is soft and is a little bigger then a marbile. Anyone have any insight about this. Want to know if henia is it very expensive. Want to do the bset for the pup.

If it is right where the umbilical cord was then probably a hernia. Vet will hopefully tell you, it can be fixed when you get the dog fixed. If he tries to get you to do it sooner. Don't. Its not good to put your dog under anesthia so much. Also make sure that if your pup has retained any puppy teeth, get them pulled at the same time as the spay-nueter.