Certain abnormalities of the fetus often feedback to their mothers through signals such as fetal movement and abdominal pain, which requires the mother to learn and correctly identify these signals in a timely manner, and to immediately consult a health care professional once there is suspicion. The first signal is that the fetal movement has become bigger and more or less frequent. Experts say that in general, fetal movement is soft and not very frequent. If the fetal movement becomes bigger, more or less often, less than 10 times/12 hours or more than 40 times/12 hours, it indicates the possibility of fetal intrauterine hypoxia. Signal two: vaginal bleeding experts, vaginal bleeding is the most important symptom of pre-eclampsia, pregnant women with symptoms should promptly do ultrasound examination to determine the location of the fetal bed, can be taken under the guidance of the doctor to preserve the fetus measures, and bed rest, such as bleeding stopped, indicating that the fetus can be saved. Signal three: generalized itching Pregnant women with generalized itching, especially in the abdomen and palms and toes, need to go to the hospital to confirm whether it is intrahepatic cholestasis during pregnancy, this condition can cause fetal asphyxia, premature birth, stillbirth, and postpartum hemorrhage in pregnant women. Signal 4: Severe abdominal pain Experts say that mild abdominal pain in pregnant women is a normal phenomenon during pregnancy, but if it is sudden and severe pain, even cramping, accompanied by vaginal bleeding, it is likely to be a warning of ectopic pregnancy or pre-eclampsia.