Is chargrilled oyster safe to eat during pregnancy?

I had been craving for some fresh seafoods for awhile since we don’t have much seafood places where we live. My DH ordered a dozen of chargrilled oysters at the nearby restaurant tonight (eventhough it wasn’t what I craved for) just to help satisfy my cravings. So I ended up having 7 of it. Now I can’t have peace of mind and telling myself that I shouldn’t have taken that risk especially for my baby. I can’t really find reassuring answers that I’ll be fine and whether or not chargrilled oysters are fully cooked. Does anyone know for sure??