I'm in the same boat as Lauren-trying. I've seen a high-risk OBGYN and my cf doc for planning my pregnancy. The doctor explained the risk/benefit situation with cf and meds. Like Lauren said, a healthy mom, healthy baby. She did feel that I didn't need some meds I was on, though. I switched from Flonase to Rhinocort, and I try to rely more on Pulmicort than Albuterol for opening my airways. I also stopped TOBI. Now, there is no proven fact that says TOBI is dangerous-but since it is in the tobra family I stopped it, on the basis that there isn't enough research that it is safe. This is really a personal opinion, b/c there are women that have used it during pregnancy. Also I wanted to stress that the main reason my doc stopped all my antibiotics is to ensure I could go 9 months without them safely, and maintain my lung function-so the reason is more of an extra "insurance" policy, really testing my body before I'm pregnant to figure out how my body will deal with it.
But, everyone is different. What my doc decided for me won't work for everyone.
The best plan is to have a good team of docs and have them talk to you about all your meds, and come up with a pregnancy plan for you.
CONGRATS on your pregnancy! Hope you feel good!