Flu, Crud or Something

Whatever it is it has struck our family... Miserable stuff with fever, chills, headache, body aches, and extreme gastrointestinal issues (to put it nicely). I have been fighting it for about a week or so now.  My husband succumbed to it today.  My FIL started with symptoms on Friday while driving to California with my SIL and her two kids.  FIL ended up in the hospital due to complications on Saturday and was kept overnight!  The SIL and two kids have been fighting it since Friday as well.  I can't begin to imagine how miserable that trip was for them all :(

We have heard that this can last for 3 weeks.  I really hope that isn't true!  I can't imagine flying feeling like this :(