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 ExtenderEngine Flywheel Removal Flywheel/Flexplate
Special Tools EN 46106 Flywheel Holding ToolFor equivalent regional tools, refer toSpecial Tools.Install the EN 46106 tool through the starter mounting hole.Remove the flex plate bolts-(1) and discard.Remove the flex plate-(2) from the crankshaft.Remove the EN 46106 tool. ...