Got back from the vet and she is pregnant. 4 eggs. I'm very shocked and even more worried. I am trying to contact the guy I bought her from to see if he did pair her with anything. Is there any way to tell if the eggs are fertile?

The vet I went to isn't an expert on ball pythons and she didn't know much about breeding. She thinks that the eggs are too big but I don't think so from all the pictures and videos I've watched, but then again what do I know. How big are BP eggs? I asked her to measure them with the ultra sound and she couldn't get the whole egg in the picture with her equipment. She think that my BP wont be able to lay them on her own so I'm going to keep a very close eye on her.

I really wasn't expecting nor am I ready for a clutch so I'm going to have to scramble and get an incubator and get ready for them. Any suggestions will be GREATLY appreciated.