Creme Brulee is a baked custard typically made with eggs, cream and vanilla and topped with a crusty caramelized sugar coating. Now since it is baked form of custard, this means that the dairy and eggs in the custard are cooked at high temperatures long enough to make them for pregnant women.
Just make sure the Creme Brulee is not runny in the middle to ensure it was cooked properly. Creamy texture still means it is cooked, but not runny. If you are making it at home, just make sure to cook it at at least 150 C for over 30 minutes to ensure the eggs in it are sufficiently cooked.
Other variants of baked custard such as Cream Caramel (with runny caramel topping over baked custard) and Leche flan (similar to Creme Brulee but with condensed milk) are all considered safe during pregnancy as long as they are cooked sufficiently, meaning the custard part is not runny.
Read about safety of custards, which is different from baked custards