Possible cancer diagnosis

I am trying to manage my thoughts and emotions on an upcoming skin doctor visit for multiple moles that could be cancerous. I am afraid of getting bad news and my mind instantly went to “I’m going to die.” Or “I’m going to have to go through a horrible chemo/radiation treatment.” The fear is real. I just signed up for coach certification and am also afraid that if I’m sick I won’t be able to complete it. Thanks for your help.