High white blood cell count green poop low grade fever and chills with headache flu negative strep negative listeria ??

If you have green: poop and fever, then look inside the belly for cause. You may need a CT, or stool culture, or GI workup. If you have headache with fever, perhaps you need to look for meningitis. In other words, have your doctor keep looking for a cause, those tests you listed are only the beginning. Focus on your symptoms and start there. Good luck.