Made an appointment with my doctor and I am scared.

My husband and I have been ttc for the past 10 months with no such luck. I've finally made an appointment with my OB/GYN to discuss the possibility of being infertile. I am completely heartbroken that I have to see my doctor for this, and am even more terrified to even bring this up. I don't even know how to begin. If anybody has been where I am now, what are some things I need to discuss with my doctor? How should I prepare for this visit?