"I've got the flu" is probably the most overused statement that is used. Influenza A is a hideous illness that goes on for weeks and weeks. In those with compromised immunity (pregnancy, young kids, elderly, terminally ill etc) this disease can in fact become life threatening.
I believe this too. I'm always hearing someone has the flu and I think they mix it up with a cold. Yep you feel yuk with a cold but it is VERY different from Influenza. If it's gone in a week its NOT the Flu!