Im after some advice. For the past 3 weeks i've had a constant headache from morning until night that gradually gets worse during the day. Its not a painful headache just an anoyance, like a dull headache. Best way to descibe it is to list the symptoms which are Brain Fog, nausea, gets worse when I stand up, cannot balance well when standing and a general feeling of being in a dream! My concentration levels have dropped aswell to the point where i'll just drift off into a daydream constantly. Last week I spent a few days in hospital, with the worst Migraine I have ever experienced and am wondering if this is linked? I've been going to the doctors, who are stumped and am awaiting a Neurologist appointment. When i take Codeine Phosphate it seems to make it go away, but I dont want to take them all the time, I juts want it gone! I know it sounds strange, but what is it. Please help,

Thanks