It is recommended to get pregnant after three months of exposure to radiation. If you have X-rays or CT in early pregnancy, this is a sensitive period for fetal development, and there is a possibility of fetal developmental abnormalities. If you have an accidental pregnancy after CT, it is not that 100% will cause abnormal development of the fetus, you can further examination before deciding whether to terminate the pregnancy, during pregnancy must be in accordance with the provisions of the doctor on time, always know the condition of the fetus. Preparation for pregnancy should be well prepared to take folic acid tablets three months in advance to prevent fetal malformations, to develop good habits, do not stay up too late and participate in heavy labor, in the preparation for pregnancy should not be unauthorized use of medication, so as not to bring unnecessary trouble to the later stages of pregnancy as well as the impact of the fetus.