The fetus does not enter the pelvis. The fetus needs to enter the pelvis before delivery in order to be born smoothly. However, sometimes the fetus does not enter the pelvis. This situation is called non-pelvic position (also called oblique or transverse position). This phenomenon usually occurs in the later stages of pregnancy (for example, 41 weeks of pregnancy). At this time, pregnant women should see a doctor for examination. The reason why the fetus does not enter the pelvis