Genital herpes

Hailey • Kinley Sophia was born in July 2015 and Theos Aiden born January 2017
I know this is a touchy subject but today I got a phone call from a family member that they have genital herpes. Honestly I know nothing about it, I am 24 weeks pregnant and scared that she could give it to my baby later when she is born. Or if I could get it sitting on the same toliet seat. Does anyone have this that can tell me more about it? I need to feel better about this just for the health and safety for my family and I.