Im a 38 female that is having sharpe stabing pain in the lower back right side of my head , this pain will last for hours, I have seen a doctor , ran several test, no high blood pressure , no other health problem, but was given med tyn with codeine and i am to take them every 1 to 2 every 4-6 hrs for pain, but the pain is so out of control that i will black out, get nose bleeds and i take up to 10-12 pills without any relief of pain, now i starting to forget what im doing, or what i was doing, confusion and now im starting to get worried, what do you think, what can be causing this problem, I need some advise please