A chest x-ray is a mandatory part of the medical exam. If you are pregnant, most doctors recommend against doing the chest x-ray since it may harm the unborn child. If you receive a request to do the medical while pregnant, you should complete the entire medical - except the x-ray. You should then contact CIC to let them know you are pregnant and cannot complete the entire medical exam. Once the baby is born, you should then complete the x-ray to complete the medical so that CIC can continue processing your file. At that point you will also have to add your newborn child to your application.