The symptoms you describe sound like your dog has a fever. Usually in pets this is a sign of an infection somewhere and antibiotics are needed to clear this up. It sounds like you are going to need to get in to your vet for treatment and I would go tomorrow sice it has been four days already.
You can check her temperature with a thermometer inserted one inch rectally. Normal temperature is 101.0 to 102.5. Anything over 102.5 is a fever.