Billings Ovulation Method is like a secret code your body uses to tell you when you're going to be able to make a baby.
You know how your body has special parts that are different between boys and girls? Well, one of the special parts girls have is called the cervix. The cervix helps babies grow inside of you when you're pregnant.
When you're not pregnant, the cervix works kinda like a gatekeeper. Sometimes it's open a little and sometimes it's closed tight. When it's open just a little, there's a special kind of gooey stuff that your body makes called cervical mucus that can come out of the gate.
The Billings Ovulation Method helps you notice when that gooey stuff is happening so you can know when your gate is open and ready for making a baby. You can check your underwear or toilet paper after you pee to see what it looks like.
When it's not time to make a baby, the cervical mucus looks kinda sticky or dry. But when it's time to make a baby, the mucus looks like slippery or stretchy clear discharge. That's when you know it's time to be extra careful if you don't want to have a baby yet!
So, the Billings Ovulation Method is just a way to help you pay attention to the special gooey stuff your body makes to tell you when it's baby-making time.