Hoping to get some peace of mind until my vet can be reached. Rescued Shih Tzu male 6 days ago from animal control. He had all vaccines last Thursday and a grooming. He had low appetite first day after vaccines, but remained playful. Second day appetite was fine and was very active. Yesterday he had no appetite and was not energetic at all. He did vomit twice clear foamy liquid, had two normal bowel movements, and urinated ok. He shivered off and on all day and his nose is very dry. I'm not sure yet how his nose normally is as we haven't had him a week yet, but my hands are painfully dry so maybe this could be from the air and not from illness?? Anyway, this morning he did go out to potty but went straight back to his bed. He is alert but is very restful. Should I be concerned at this point that something is horribly wrong with him? Could he just be going through stress of the vaccines 72 hours after they were administered? I know he could be stressed from his life changes as well, but up until yesterday he's been very happy and playful. Thanks for any suggestions!