Seat belts work for everyone, including pregnant women. Like all occupants, they are more likely to be seriously injured if they do not wear seat belts.

A pregnant woman should wear a lap-shoulder belt, and the lap portion should be worn as low as possible, below the rounding, throughout the pregnancy.
The best way to protect the fetus is to protect the mother. When a seat belt is worn properly, it is more likely that the fetus will not be hurt in a crash. For pregnant women, as for anyone, the key to making seat belts effective is wearing them properly.
Lap-Shoulder Belt
Seat Belt ExtenderTaillamps, Turn Signal, Sidemarker, Stoplamps, and Back-Up Lamps Lighting Bulbs
SidemarkerStoplamp/Turn Signal Lamp/TaillampBack-up LampTo replace one of these lamps:Open the liftgate. SeeLiftgate.Remove the two screw covers from the taillamp assembly.Remove the two screws securing the taillamp assembly.Pull the taillamp assembly out of the vehicle body.Disconnect the lamp wiri ...