When you're pregnant you should avoid any queso or other cheeses at a Mexican restaurant or any restaurant.
Queso and other Mexican style cheeses are usually made from unpasteurized milk which can harm your baby and pregnancy if the cheese happens to contain listeria.
Just to be safe you should just stay away form any Queso or other unpasteurized cheese while pregnant.
It's not worth the risk to your health and your unborn baby just to eat some cheese.
When I was pregnant I just avoided any of those cheeses just to reduce the risk of any harm to the baby and it was well worth waiting.
The baby is much better than the cheese ever will be so it's worth the wait.