Cystic fibrosis? Test or no?

Sirena
I'm a new momma first pregnancy and go to OB next Wednesday and I'm kinda freaking out over all the questions they sent through email, one of them is about CF and if we should do genetic testing on it or not and don't know what to put. Should I do more research on it before I even consent to it or were the odds really slim and not something to worry about? Please help ease my peace of mind. I'm also 7 weeks today from my calculations at home. But don't really know what to expect from the OB either.