Anyone have the Clearblue fertility monitor?? How exactly does it work and how do you use it?

Ky 8-15-17πŸ‘ΌπŸΌ & 10-28-17πŸ‘ΌπŸΌ Pregnant with myπŸŒˆπŸ’•
Curious how you use it and what all you do with it??? I've been looking into it because I see people taking about it and I don't understand how it works? And what you do with it?