A week ago my dog was released from the vetinarian hospital complete with sonograms and blood tests indicating an enlarged liver and spleen. The doctor said that his platelets were low in amount as well, but two days after being discharged from the hospital, we took him back to the hospital, and the doctor infromed us that his platelet levels were normal again. After recovering he was fine for the last two days, but today he showed symptoms of shaking and heavy breathing again. He's been taking the antibiotics "antirobe" and "baytril chewable", but he seems to be reverting back to his previous state. He also seems feverish; his ears are very warm. What does this mean and how can I help him?