Its the cat poop that you can't be around and the litter. You don't need to touch it at all. It can cause you to miscarry.
Avoid it,you never do anything that can harm you are your child. .
Thats crap. you are fine and you can clean your cats litter box. The reason they say its not safe for pregnant women to clean cats poop is because of the bacteria called toxoplasmosis that is found in cats stool. You can only get that bacteria if you pick the cats poop with your bare hands and eat afterwards or touch your mouth without washing your hands not by breathing it in. (If you get the poop inside your mouth) The only way your cat can have that bacteria is she feeds with raw meat that has that bacteria or if she eats mice or other rodents. If your cat is an inside cat she cant have the bacteria unless of course you are the one feeding her with raw meat or have rodents inside the house that she can catch. But in either way, just wash your hands properly after cleaning your cats litter and you will be fine.
^ answer is spot on. You can change it just as long as your washing your hands and have good hygiene your fine.
I change my cats liter box. I just wear disposable gloves and cover my nose and mouth. I wash my hands when I'm finished.