Has anyone used the Chinese lunar calendar??

I believe that's what it's called (sorry if I'm wrong)

I've heard it really has worked for many people.

I don't understand it!

It says use your lunar age? What's that?

Someone help me!

I'm 30, birthday is December 14 1989

Trying to conceive right now.

According to the calendar what would be predicted to be the gender of my baby?

Help! I'm intrigued by this and want to understand more.

Here's the calendar I was looking at: