i am 30years old, i weigh 9 stone,im 5 2" tall, i havent been ill for a while but the past 2 weeks i have had a constant headache, my legs are shaky and i feel so tired all the time, the headache is at both sides of the temples the front and back of my head, ive tried different types of painkillers but it doesnt go away, ive tried laying in a dark room but that doesnt help either, ive been to the optician but my eyes are fine