Oh God...

The symptoms of swine flu are broadly the same as those of ordinary flu, but may be more severe and cause more serious complications.

The typical symptoms are:

sudden fever, and
sudden cough.
Other symptoms may include:

headache,
tiredness,
chills,
aching muscles,
limb or joint pain,
diarrhoea or stomach upset,
sore throat,
runny nose,
sneezing, and
loss of appetite.
If the flu becomes pandemic, potentially, everyone is at risk because few people, if any at all, will have immunity (resistance) to it.

If you have any of these symptoms but a flu pandemic has not been announced, you could have seasonal flu.