Ask a Dog Vet and Get Answers to Your Dog Health Questions
Hello, I'm Dr Gary. I've been practicing veterinary medicine since 2007. I look forward to helping with your questions/ concerns.
Pregnancy in dogs lasts 62 days on average. If the potential mating was 1 month ago, then we may not see bones on x-ray yet. The best way to diagnose pregnancy is with an ultrasound. Once they're ~ 45 days into gestation, then you can x-ray to get a count and know how many to expect.
I would just keep in touch with a vet to confirm the pregnancy and then monitor it. Most dogs will have the puppies at home without issues. Sometimes we see problems and they need a c-section. Hopefully that doesn't happen here.
Here's a nice handout on delivering puppies that you can read over:
I hope this helps, let me know if you have any other questions.
I posted just before you, in case you didn't see.