Breech Babies

Courtney • I am 27 years old from Calera, Alabama! I have one daughter who is 5 years old and #2 due in April.
I'm 36+3 and he's breech. Had an ultrasound to check his position yesterday because we have known for a while he's been breech. 
He's butt down with his legs/feet in front of his face. At this point my doctor isn't confident he will turn bc of this position.
Stories mommas? Anyone been here and they turned? Or how it turned out for you? 
I'm currently 4cm. Had my first at 36 weeks and was critical leading up to her birth which was a vaginal delivery.
I would like to know what's possible or what to most likely expect. I'm not against having a c section I just want to be prepared. 
Thanks!!