MJ,
I don't know if you are currently in therpay for help? Or if you have done so in the past, but here are some great self-help links for books and techniques you can work on at home.
If therapy is available to you, I highly recommend looking into this treatment option...it was a game changer for me.
Until then, please get started with the effective material below...it helps!
With encouragement!
S.C.
Books for overcoming Health Anxiety:
http://www.amazon.com/Overcoming-Health-Anxiety-David-Veale/dp/1845298241
http://www.amazon.com/Treating-Health-Anxiety-Cognitive-Behavioral-Approach/dp/1572309989
Health Anxiety - A Self Help Guide:
http://www.nhs.uk/conditions/hypochondria/pages/introduction.aspx
Helping health Anxiety
http://www.cci.health.wa.gov.au/resources/infopax.cfm?Info_id=53
Health Anxiety- The Super Scanner
http://www.get.gg/docs/SuperScanner.pdf