At 23 weeks of pregnancy, is the fetal position already fixed?

Generally, at 23 weeks of gestation, a fetal cephalic (head-down) position is usually not yet fixed, and the fetus may still spontaneously change position. However, if the pregnant woman has limited uterine space, restricted fetal movement, or conditions such as uterine malformation, the fetal position may become relatively stable earlier, although changes are still possible. If there are concerns, it is recommended to consult a healthcare provider in advance. Detailed explanations are as follows:

If at 23 weeks of pregnancy the amniotic fluid volume is sufficient and the fetus is relatively small with ample room to move, the fetus may still freely rotate in the coming weeks even if currently in a cephalic position, possibly shifting to breech, transverse, or other positions. This is considered normal, as the fetal position is typically not yet fixed and does not require intentional intervention.

If at 23 weeks the pregnant woman has oligohydramnios (low amniotic fluid), multiple pregnancies (such as twins), uterine fibroids, or uterine septum—conditions that reduce intrauterine space and restrict fetal movement—the current cephalic position may become relatively stable earlier. Nevertheless, the fetus still retains some mobility and is not absolutely fixed, so ongoing monitoring of fetal position changes remains necessary.

After confirming a cephalic position at 23 weeks, there is no need to overly focus on whether the position is fixed. The pregnant woman can engage in moderate daily activities (such as walking) to provide appropriate space for fetal movement.