I have been having a runny tummy, headache over my eye region, nausea and generally feeling weak. my apetite is on and off.

Grippe: These symptoms of nausea, diarrhea, headache and fatigue are highly suggestive of a viral gastrointestinal tract infection which should resolve after a few days of rest, light bland diet with no harsh roughage and taking Tylenol. Drinking flat,room temperature ginger ale or Coca-Cola settles the stomach. If symptoms don't gradually improve, see your physician for evaluation.