It may be tricky to buckle up now that you’re pregnant. (Over the belly or under?) 

The correct way to wear a seatbelt is the diagonal belt should be placed over the shoulder, not the neck (and never under the arm), between the breasts and around the bump. The lap portion of the belt should go across the hips, fitting comfortably beneath the bump. If available use the adjuster on the door frame until you get the right fit.
 
Another important consideration is seating position. Ensuring there is a good distance between the pregnant mother's abdomen and the steering wheel is important. It's important to adjust the steering wheel or seat as the pregnancy progresses. Adjusting the seat to maintain a suitable distance from airbags should they deploy is also advised.
 
Wearing a seatbelt and how you wear it plays a major role in protecting mum and baby. Unbelted women are almost three times more likely to experience the death of a foetus in a crash, compared to belted mothers.

Here's a great video from the RSA that explains everything easily. Be safe x