The head of the fetus starts to face downwards, usually after the seventh month of pregnancy, but the exact time will vary as each pregnant woman’s situation is not necessarily the same. Generally speaking, before the seventh month of pregnancy, due to the relatively small size of the fetus and the relatively large amount of amniotic fluid, the fetus is in a floating state and its orientation and posture are not very fixed. After the seventh month of pregnancy, the fetus increases in size and most of the postures begin to be fixed and will shift to the head-down position. And will maintain this fetal position into the basin, to prepare for a smooth delivery. An ultrasound should be done in the seventh month of pregnancy to determine the position of the fetus. If the fetus is not head down, it is in an abnormal position. If the fetal position is not normal, it needs to be corrected by appropriate methods under the advice of a doctor. If the fetal position cannot be successfully corrected within a period of time, please do not force the correction. If the position of the fetus is changed forcibly, it may affect the fetus and the pregnant woman.