If you are not aware that you are pregnant and have had an X-ray, first of all, don’t be too nervous to avoid any impact on the development of the fetus due to anxiety. Pregnant women are advised to consult a doctor in time and provide the doctor with details of their last menstrual period, coitus and the time when the X-ray was taken, so as to determine whether the fetus will be affected. In addition, it is important to pay attention to the part of the body where the X-ray is taken. Usually, X-rays of the chest will have less effect on the fetus in the abdomen, while X-rays of the abdomen will have a greater effect on the fetus. Generally speaking, if X-rays are taken during the pre-implantation period, i.e. within 2 weeks after intercourse, there may not be any significant effect, but it may also lead to miscarriage, fetal arrest or even malformation. Chorionic villus aspiration can be done around the 3rd month of pregnancy, or a portion of amniotic fluid can be taken in the 4th month for chromosomal and genetic examination of the fetus. In addition, pregnant women need to have a 3-D ultrasound of the fetus in the 6th month of pregnancy to determine if the fetus is developing normally. If chromosomal abnormalities or severe malformations are found in the fetus, the pregnancy needs to be terminated promptly. If the ultrasound as well as amniocentesis does not find any abnormality, you can continue to observe and preserve the fetus. During pregnancy, folic acid tablets should be taken on time to supplement folic acid to prevent fetal neural tube development malformation. Avoid sexual intercourse to prevent miscarriage. Ensure sufficient rest and healthy diet. If the fetus is delivered successfully, you also need to pay attention to the development of the newborn and go to the pediatrician for a detailed examination.