spent lots of time in france as my in laws live there. follow the same advice as here, depends where you are staying, the markets have lots of lovely food to cook with, fruit is amzing, just wash it as you would here.
restaurants- how is your french? tell the waiter you are pregnant so he will know to steer you clear of any dishes with foie gras involved (or ingredients you should not have) he will also be able to placate the chef when you order a cheese sandwich off menu as you have to have one NOW!!
drink lots of water, avoid the charcuterie, pate and soft cheese which is a shame. it will smell too, so you might feel a bit sick...
my french friends thought i was nuts to not want to eat pate etc as they all did and were ok, plus I wasn't drinking wine either (mon dieu!)
make sure you have a e card thing in case you need a doctor, and you can look up where you would need to go with a map if you need help. have a french english dictionary with you just in case if your french isn't so good.
travelling with bump - don't wear anything with a waist band that might dig in as you will be sitting for ages. a long wrap dress was good for me. drink lots of water. take lots of nibble plus gaviscon in sachets if you need it. take it slow, ensure lots of time, let people know you are pregnant- they will help you, make your travel easier and if anything should happen will look out for you.
france is lovely! have a lovely time:)