When should I see my doctor?

That's a judgment call you would have to make if you feel like you've got the flu. But if you've got flu symptoms, and you've recently been to a high-risk area like Mexico, CDC officials recommend that you see your doctor. Keep in mind that your doctor will not be able to determine whether you have swine flu, but he would take a sample from you and send it to a state health department lab for testing to see if it's swine flu. If your doctor suspects swine flu, he would be able to write you a prescription for Tamiflu or Relenza.