I have a Chiuahua and the guys normally upbeat and friendly but the past two days hes kept to himself havnt seen him eat or drink water usual will beg for food while im eating and he wont do that he feels warm but his pads n nose are cold the nose is also wet seems to breath normal even his facial expression looks Sad he also seems to Keep licking his butt constantly i noticed when first started looking sick he threw up an lil and had a slight case of diahrea which seems to have stopped Should i be worried??