Hello again, and thanks for your very helpful reply.
Also, thanks for your patience, as I was offline when you posted back.
Definitely plan to make an appointment with another vet (good move!), but ask your present vet for a referral to a gastroenterology veterinary specialist. Specialists are usually found at ER vet centers.
The gallstone may be related to the symptoms you described and either need to be dissolved with medication or removed surgically. If there is an infection, as well, antibiotics will be prescribed. A specialist will know what the next step should be, after seeing the x-ray and/or doing other imaging, like an ultrasound. Here is more information for you to read:
I hope all will be well with your furry girl and please let me know how she's doing and what the specialist tells you. Thanks!
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