Hello and welcome!
I am sorry to hear of your anxiety and health concerns. Chronic illness and anxiety can and do certainly go hand in hand with many people. We have a few 'cross-over' members from other forums, so know you are not alone!
Along with echoing the solid advice above...I am adding some self help links to get you started until your upcoming appointment.
Take some time with these, as well as all of the material in our Resources, which is all beneficial for anxiety management if practiced regularly!
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
Keep talking to us as well. We care, undertstand and support is key!
Talk soon,
Scaredy Cat