Pre seed?

Crystal • 24 Years Old. In love with my bestfriend since 10/01/09. Baby #1on the way! Baby dust to everyone!
So you ladies recommend pre seed? What is it for? How do you use it? I'm new to all this TTC! So I don't really know much stuff about things like "pre seed" we been trying for 1 month now...help! No rude comments✋