Eating sushi while pregnant is considered safe as long as the sushi has been frozen previously to prevent any bacteria from growing in the sushi.
Store bought sushi is usually free of bacteria but there's always the chance that it could contain bacteria and cause issues with the pregnancy and harm the unborn baby.
I personally would not take the chance and avoid eating any sushi or other raw fish until the pregnancy was over with and your baby turned out healthy.
I would rather not risk my unborn babies life or health just to eat some sushi.
Also make sure eggs and other meat are fully cooked before eating them when pregnant and avoid soft cheeses unless you heat them up really hot.
Bacteria can cause health issues with the baby and also can complicate the pregnancy so it's not worth it to chance it.
But my sister ate sushi while she was pregnant and her pregnancy went through just fine and her baby is very healthy.