Posterior position

Kristin • Daughter was born June 30, 2015 🎀
I just had my 36 week ultrasound last week to check amniotic fluid and baby position..everything was just fine..baby is head down except her back is aligned with mine & she needs to be facing my back with her back against my belly. Has anyone baby been in this position and change positions right before birth? I heard if not it'll be a longer labor & back labor! Ugh