Title: If the fetus is in this position after entering the basin, it is called left occipital fetal position. Congratulations on your easy delivery. Usually, the shape of pregnant mother's uterus should be pear-shaped, that is, the upper part is narrow and the lower part is wide. If the cervix is narrow and the top is wide, it is easy for the fetus to change its position due to space constraints when entering the basin.