It could be the flu that is lasting a little longer. In Jan. my whole family got sick, throwing up, diarreha. It took us about a week to recover completly. I felt sick on and off the whole week.
But you could be pregnant. Have you missed your period? The only way to tell for sure is take a test.
Good luck. :)
I didn't feel 'normal' after the flu for a full 2 weeks.
It got to the point that I was afraid I wouldn't ever recover fully. I'm not ruling out pregnancy, just letting you know that the flu can 'linger'.