We have a 2 month old tom that got left outside overnight in a pretty bad rain (Sunday night). Now he's not eating, color is bad, and he isn't eating. We have him in a separate pen, under a heat lamp and have been giving electrolytes but he doesn't seem to be recovering. He's drinking lots of water but has a hard time keeping it down and has deveoped diarrhea. Is there anything else we should do?