Temp of 102 & dry throat & complete exhaustion. tested negative for the flu last week now i have this should i get tested again?

May test strep, flu: Nose and throat symptoms can be from flu viruses, strep throat, allergies, etc., except that allergies usually don't cause a fever. Flu is ususally feverish. Doctors have rapid 5-minute tests for strep, so a primary care Dr. can diagnose strep and start antibiotics "right away", which means within the first 3 days of a strep throat infection. Doctors also have a 15-minute test for Flu A and Flu B.