Which of the following fundal heights indicates less than 12 weeks gestation when the date of the LMP is unknown?

Uterus in the pelvis

When the LMP is unknown, the gestational age of the fetus is estimated by uterine size or position (fundal height). The presence of the uterus in the pelvis indicates less than 12 weeks gestation. At approximately 12 to 14 weeks, the fundus is out of the pelvis above the symphysis pubis. The fundus is at the level of the umbilicus at approximately 20 weeks gestation and reaches the xiphoid at term or 40 weeks.