May I tell you that you have come to wonderful site to learn the types of information and support you will need for your journey with your cf child? Congratulations on taking that step.
On this site you will discover that there are thousands of experiences with cf. Depending on hundreds of factors, there are children who will breeze through their childhoods with seemingly little difficulty while others struggle. Some have difficult teen years, some do fine until their twenties or thirties. Some have digestive issues, others only lung issues. My personal story is that I have only lung issues that were relatively mild until my late 30's. I am now 54 (55 in about two weeks), and my lungs are in pretty bad shape.
There are drugs and treatments that are available to you that will help improve the quality and length of your child's life. There will certainly be more medical progress throughout your child's lifetime. I'm not going to preduct a cure, but I am hopeful that dramatic improvements will be made in her lifeltime.
You can find advice on how to lead a sterile life to avoid any possibility of germs and you can find advice on how not to become too phobic about germs. You will need to sort out what works best for you. I, personally, do not follow all the germs rules, and I have a had a rich long life.
There is no right or wrong way to lead your life with your cf child. There are studies and statistics that can make your eyes swim. There are arguments that will rage about quality versus quantity of life. At best you try to find the balance that works for your family.
This forum is filled with people of an entire spectrum of experiences and opinions. Some you will agree with, some you won't. That's okay. They all mean well. They're all in this fight together with one common purpose - to eradicate the disease and the challenges that come with it.
I applaud you for beginning your search early. Knowlege is, indeed, power. I urge you to become informed, to have an open mind, to come here often (but remember this is a forum, not the end all and be all of cf), and to become a strong advocate for your daughter and your family. You and you husband alone are in control--don't let the medical world or anyone else bully you into doing anything that doesn't feel right to you.
Despite how it might sound from all you read, cf does not rule every minute of every day. Your daughter will bring you endless hours of fun and joy and hope. Most of the time you will probably forget she has cf. Don't get sucked into any sort of doom and gloom mentality. Enjoy the rest of your pregnancy and then relish the wonderful new family you have created.
Welcome to this site, and I hope we can all be a system of support for you. I look forward to hearing all about your little girl in the months to come!