Thanks for all the posts guys, I appreciate the input.
I took Bella to the Vet's earlier and after all the prodding, poking, and putting thermometers where thermometers were not supposed to goshe was declared fit and healthy.
She was however prescribed Koagel to help settle her stomach and an antiworming tablet to give once she has fully recovered.
Now I just have to wait for Bella to forgive me for the thermometer incident...she is very wary of me at the moment. I don't blame her LOL.
In summary, would it be a fair to say that original vet was correct in what he suggested?