35 weeks and baby is breech

I'm 35 weeks and 4 days pregnant and my baby is breech. I found on on Wednesday at 35 weeks from an ultrasound. She's frank breech (feet and head are up and her bum is down). Anyways, has any of you successfully been able to turn her from all these crazy sitting or yoga positions? Or did they turn by themselves? I want to do everything in my power to have her naturally, but I know if I need to have a csection I will. Any ideas???