Don't feel that way! It's a complex organ and no one would expect you to fully understand. You should reach out to your cardiologist and just see if they can explain it better to you, that may be helpful before seeing the geneticist and answer some of your questions.
Thank you for your reply.I feel so ignorant about how hearts work I feel like my brain can't even comprehend the risk or understand. I'm not a particularly stupid person but this is all just beyond my capacity.