For the past 6 weeks I have had pressure in my head that comes and goes in waves and a pressure and tingling sensation behind my nose and a somewhat metallic taste with whatever is draining into my throat. My doctors started me on Flonase, Zyrtec, advil cold and sinus, I also have been using the Netipot twice a day, I don t have nasal congestion or any Nasal drainage other than a post nasal drip every once in a while. I don t have itchy or watery eyes or sneezing. I have mentioned to my doc that one pupil is sometimes slightly larger than the other pupil but they react to light appropriately. The pressure goes away and comes back not sure what to do. Is this sinus related