Just reading this. Best to get him back to the Vet.
Good luck and please come back and update
Thank you for the response Jerry_NJ. I will try that. Seems like this morning he was getting worse and was crying when he would stand up. I think back to the vet it must be for him. Thanks again.
Be sure the dog is drinking water, first concern.
Try some favorite foods, our dog is now refusing his normal kibble as well as the canned food. But, he will eat boiled skinless chicken breasts.
We cooked some up to make meals for ourselves and gave him some small pieces - he is a small dog so expensive food isn't too expensive, and we don't give him much. This got him eating better, and then I put very small amounts of chicken broth (purchased from the store) on kibble and he eats that better, but not like he used to. We may take him to the vet as he has other digestive issues, mostly trouble controlling his need to "poop" and it is very soft, not diarrhea, but not normal either. These are things you need to check before taking to the vet in any case.
I'd hope a vet visit and some meds for upset stomach would cost well under $100. but I understand our little rescue Westie has cost us a bundle.