Flu or Swine Flu?

I'm sick. I don't know whether it's just a normal flu or swine flu. I don't have a fever, but I have 5 of the symptoms on the NHS list (unusual tiredness, headache, loss of appetite, aching muscles, diarrhea). In short, I feel like I've been run over by a truck. Unless my one day of bed rest prompts some sort of miracle, I'll stay home tomorrow.