Do I have Flu ?

 Most healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5 days after becoming sick. Children may pass the virus for longer than seven days. Symptoms start one to four days after the virus enters the body. That means that you may be able to pass on the flu to someone else before you know you are sick, as well as while you are sick.  Some persons can be infected with the flu virus but have no symptoms. During this time, those persons can still spread the virus to others.

Influenza (the Flu) Symptoms

Influenza (also known as the flu) is a contagious respiratory illness caused by flu viruses. It can cause mild to severe illness, and at times can lead to death. The flu is different from a cold. The flu usually comes on suddenly and may include these symptoms:
Fever  (usually high)
Headache
Extreme tiredness
Dry cough
Sore throat
Runny or stuffy nose
Muscle aches
Stomach symptoms, such as nausea, vomiting, and diarrhea, also can occur but are more common in children than adults
These symptoms are usually referred to as "flu-like symptoms."