Check for a sudden onset of fever
Check for chills or sweating
Check for body aches
Check for fatigue or weakness
Check for headache
Check for dry cough
Check for sore throat
Check for runny or stuffy nose
Check for shortness of breath
Check for nausea, vomiting, or diarrhea
Compare symptoms to a cold, which usually develops more slowly and is milder
Take a home flu test if available
See a healthcare provider for a flu test if symptoms are severe or you are at higher risk
Seek urgent care if you have trouble breathing, chest pain, confusion, or severe dehydration