CDH - or something else?

I also suffer from"chronic daily headache."  I've had the MRIs, blood work, CT, Spinal Tap, the whole nine yards.  Currently trying Chiropractic even though there's not a lot of hope.  I started getting "migraines" after the birth of my second son.  Just once or twice a year and they would last a few days.  Then in Oct 2006 a got a headache that has only settled down a couple of times since.  I get sharp shooting pains in my head in addition to the constant pressure and "steel rod." I get numbness and tingling in my neck, shoulder area, hands and feet.  My auras continue to get more severe, currently with zigzags, floating dots, "fire flies" and blind spots. A neurologist had put me on Nortryptaline (100) and Propanolol (120) as preventative and suggested Aleve for the pain. I did that for six months with no relief.  I currently take nothing except an occassional hydroco when it gets REALLY bad, and that doesn't even take away the pain. I sleep well, but not on a regular schedule because of my job. Still, I have no energy and no ambition for anything. I have recently started having what I think are anxiety attacks because of the pain and the feeling of helplessness and depression is ever lingering because I feel so alone.  
Currently trying to get into a headache clinic in the cities, but wonder what else I can do to look for an answer?  What about PFO, what about Botox?  Cut me open, I don't care - just get rid of the pain!