Symptoms of intrauterine growth restriction (IUGR) usually appear during regular pregnancy checkups. Sometimes a woman may feel that her baby is smaller than it should be. As part of monitoring the pregnancy, a doctor measures the height of the uterus from the pubic bone to estimate the size of the fetus. After about the 20th week, the number of centimeters in the measurement, called the uterine fundal height, is usually equal to the number of weeks in the pregnancy. If the distance is too little the baby could be smaller than it should, a possible sign of intrauterine growth restriction and the doctor will order additional tests.