Thanks Chook, Robb
Its quite a relief hearing that its rather common in this breed, we were starting to think it was a lot more serious.
We've noticed that she can yelp, when you are just about to touch her, that slight flinching that a dog can do, that split second when they're not sure whats going to happen. That flinching then resulting in a yelp, indicating that the quick movement she's made has maybe jerked her neck slightly? resulting in a painful reaction?
We were so puzzled as to why she'd yelp before you even touched her, but its making more sense now that its due to her somewhat nervous disposition, which is resulting in her moving quickly to get a shot of pain in her neck.
We were going to bring her to the Vet, but as you said Robb, your vet didnt find anything so researching this is very beneficial before visiting one.