Yes, it is safe to eat prawns while pregnant as long as they are thoroughly cooked. Proper cooking kills harmful bacteria and viruses that could cause food poisoning. Prawns should be cooked until they turn pink or reddish and have a firm texture; undercooked or raw prawns should be avoided. It is also important to ensure that prawns are fresh, properly stored, and not left out at room temperature for long periods. Moderate consumption of cooked prawns can be part of a healthy pregnancy diet because they are rich in protein, omega-3 fatty acids, and important vitamins and minerals. However, raw shellfish or cold prawn dishes that may have been sitting out should be avoided for safety reasons. In summary, prawns are safe and nutritious during pregnancy if they are fully cooked and handled safely.