The main thing is to stick to pasteurised cheeses.
Don't assume all hard cheeses are fine -- I think Comte is often not pasteurised, for example.
I was pregnant in France and found that nearly every cheese at the supermarket was pasteurised, including a range of chevre. Where you need to be more careful is eating cheese from farmers markets -- most of these will not be pasteurised. And obviously at restaurants, as you can't be sure where they got the cheese from.
I was so sick then that the only thing I could eat was goats cheese and bread. Try not to worry too much and enjoy your trip!
ps you can have a sneaky little glass of bordeaux sometimes too 