31 weeks of pregnancy every day fetal movement is very frequent may be normal, if the frequent fetal movement after a decrease in fetal movement, this situation should be considered abnormal. The peak period of fetal movement is from 28 to 32 weeks of pregnancy, because the fetus is small and the space in the uterine cavity is large, and the amount of amniotic fluid in the uterus is relatively large, so the daily fetal movement will be more frequent, and at this time the number of fetal movements is relatively large, which indicates that the fetus is developing well in the uterus. If the fetal movement is frequent after the fetal movement to reduce or fetal movement disappears, this situation is not normal, may be the fetal intrauterine hypoxia performance, such as the umbilical cord around the neck, the umbilical cord knot, placental function aging and other causes, this situation should be timely medical care. You should learn the correct way to count fetal movements and seek medical attention when you notice any abnormalities.