He was throwing up sunday night after not eating Friday and Saturday (the chicken my relatives fed him cause he was not eating) I brought him to the emergency vet, I was afraid it was bowel obstruction. They did Xray and gave him IV fluids and antiemetic. they told me to feed him a bland diet 24hours later. But he was not interested with the food. He ate some though and kept it in his stomach. Tuesday he did not eat, was not making regular stools of course. Wednesday he only ate boiled chicken and boiled rice again, but is not consuming his regular amount of water and was listless in my apt, he was not as interactive or active as before. Today I brought him back to his reg vet because he lost 2lbs from not eating. The vet said he was fine, looked at his Xray and gave me some reglan and Pepcid. He threw up when we got home. Now he's still not eating, I offered him I/D hills prescription diet, offered him boiled chicken and rice. still nothing. What am I going to do next?
hi, thank you for the response. I already took him to two vets, one on Sunday when he was throwing up and today with his regular to have him checked out again. She said she can't see anything wrong. She looked at the Xray and the blood work they did from the emergency clinic. When I take him out for walks he's fine, trying to drag me and trying to get attention from other people. And then i take him back to the apt and he's just moping around. I just want him to eat and be well again. What could be the reason he's not interested with his food?
He does not even beg anymore when we are having lunch or dinner.

Ask your vet for A/D prescription diet. A/D is essentially pre-digested food. It has all of the nutrients your dog needs, but it shouldn't make him throw up. If he is still sick tomorrow, take him back to the vet before Sunday. On Sunday you would have to go to the emergency vet clinic, and that is very expensive.