Came on suddenly. He is 35 generally healthy, had a brief cold over one week ago, recovered quickly, then a about 35 hrs ago he started having chills. His temp has been ranging from normal up to 102, is at 102 this afternoon and was also 102 on/off yesterday. He has the fever, chills, headache and diarrhea. He is weak, but can get up if necessary. He has been regularly drinking water, coconut water(for electrolytes), and a bit of fresh ginger tea. Only food since becoming ill has been a small amount of yogurt, berries&bananas about 12 hours ago. Has no appetite now. He s requesting more Ibuprofen for headache. Is that Ibuprofen safe when he has not eaten and is not retaining liquid long? What is this? A stomach flu? Something more serious? What should we do? Is it time to go to a hospital? We have no personal physician/insurance.