This is an excellent topic to discuss with medical professionals. Openly discuss your fears with your primary care doctor, particularly if you have specific symptoms that you are concerned about or if these thoughts were prompted by a family history of cancer. And, if anxiety about this topic is recurring frequently and/or interfering with other aspects of your life, consider visiting counseling services: bit.ly/BC-counseling. They will be able to help you to come up with strategies for dealing with this recurring worry.