Cough, headache, sore throat, running nose, no fever, what to do?

Maybe strep, etc...: Nose and throat symptoms can be from cold viruses, strep throat, allergies, etc... It can be difficult to tell what the cause is. If symptoms only last 1-2 days, it is more likely allergies or irritation. Doctors have rapid 5-minute tests for strep, so a primary care doctor can diagnose strep and start antibiotics "right away", which means within the first 3 days of strep symptoms.