M.,
Please check out these links for health anxiety! They will help you very much.:)
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
The third called the Super Scanner explains the anxiety=symptom=more anxiety=more symptoms cycle so well. You will see just how this all affects our thinking and fears.
Wishing you the best...go through all of these...you are going to be fine.;)
S.C.