Hi, I am a 55 year old healthy woman (vegetarian, very rarely drink, exercise and meditate). I returned to Australia on Tuesday following an eight week holiday in Singapore, Scotland and Paris. I awoke yesterday with a throbbing and persistent headache at the back of my head and considerable persistent nausea. I also had bouts of dizziness whilst lying down and felt very fatigued and achy. Although not so pronounced today I still have considerable nausea and a dull but not so painful headache with continued fatigue and aches. I do not seem to have an elevated temperature. I also seem to have a persistent lower back pain.