If you want to get a jumpstart on your therapy, here is a great free on-line program to help people with anxiety about health problems. I think you would get a lot of out this. Its likely the exercises in this program will be similar to what your therapist will recommend, as its based on cognitive-behavioral therapy principles.

http://www.cci.health.wa.gov.au/resources/infopax.cfm?Info_ID=53