My 4 month old male cat was altered on Sept. 3rd, received his rabies vaccine, FeLV and FVRCP vaccines. He has had a loss of appetite since Friday Morning (Sept. 5th). He has had diarrhea, and vomitting. He refuses to eat. He has been drinking water. I took him to the vet on Friday afternoon (Sept. 5th) and he didn't have a fever and his vitals were normal. They sent him home with a liquid antibiotic, however I wasn't able to get him to take it. He got very upset and started foaming at the mouth. He spit all of the medicine out. I haven't tried to administer it since. Do you have any ideas of what could be going on? Should I seek emergency medical attention tonight?

