Is lobster safe to eat during pregnancy like in a bisque? only raw seafoods or high mercury fish like tuna are a problem, right?

Yes: The main concern is mercury and the larger fish which eat the smaller fish concentrate the mercury and are more risky. Fortunately, lobster doesn't eat very large fish.

Lobster: Lobster, prawns, scallops, etc are safe during pregnancy. Many large ocean fish now contain unacceptable levels of mercury due to mans contamination of the sea. Fish can be a very good food during your pregnancy. One to two servings a week is recommended. The fish high in mercury are king mackerel, shark, swordfish and tilefish. Tuna is actually ok, but salmon would be a better choice.