3-4 yr old rat. Took him to the vet Friday (today is Monday). Vet gave him shot of Baytril for pneumonia. He is now gasping for air with a soft wheezing, not eating or drinking. Having a hard time deciding if the Baytril is even working. He isnt wheezing as loud or crackling anymore but the gasping is worse. Am I fighting a losing battle? I dont have any money until Thursday to take him back. Is there anything else I can do from home for him?? Please help!!