
Why do you want to breed??????
IMHO this girl is too old to have a first litter. Why don't you do a lot of research into your lovely breed, talk to some well-informed handlers at tests, shows etc, and get the details sorted out. Expect the Lab people will have some contacts for you to talk to.
When you find someone to talk to, PLEASE call your own girl yellow, never, never golden (even if she is!)
Jo and the Casblaidd Flatcoats