hello doctor..i was wondering..ive been smoking hooka pipes since i was 15 (im 23) only on occassion, maybe once a month or even less, but every single time, 10 minutes afterwards i get pulsatile headaches..like the kind when im sitting or laying down its fine, but when i stand down it starts to hurt, on the back and sides of my head and irradiates to the back of the neck...arround c2-c4