According to Everyday Health the Flu lasts typically one to two weeks. The most severe symptoms such as fever, chills and muscle aches start in the beginning.

This is usually followed by a headache, sore throat, runny nose and cough.

Fatigue and congestions can last for weeks.

A person infected with the Flu can be contagious at least one day before symptoms occur and last a week into the virus.

Complications from the Flu include sinusitis, bronchitis and pneumonia. Don't delay, see your doctor right away if you develop symptoms or have a household member who shows symptoms. Getting a Flu shot is very important, especially for young children and adults over 60. If you do get the Flu, although it is a virus, your doctor can help you alleviate your symptoms and track potential complications.

Read more here from Medical News Today.