Breech

Has anyone had any luck with their baby turning head down after 35 weeks? I will be 35 weeks tomorrow and my baby is still in the head up position. I'm starting to get really nervous about him not being head down. My doctor said last week that she isn't worried about it yet but every day I get alittle more nervous he won't turn. This is my first baby and I really want to deliver naturally, I am so terrified to have a c section.  I can't stop crying right now. :/ I'm doing everything I can to try and get him to turn; butt in the air excercises, laying upside down off the couch, Chiropractor, went swimming ect... I don't know what else to do!