^^^
I meant to say, "no one HERE can tell you if you have the flu or not."
No one can tell you if you have the flu or not. You need to seek the help of a doctor. However, these symptoms don't necessarily sound like the flu to me at all. It could be a million things...with migraine headaches, you can have nausea, etc. With a stomach bug, you can have loose stools...With reflux, you could have the burping issue plus nausea. Lots of things to consider, so I would seek the advice of a professional.
It dosnt sound that pleasent. You should go to the doctors and get on some antibiotics.