Breech at 31.5 weeks

I know it's too early to "officially" worry, but my girl is head up right now and well before this point in my last pregnancy (also a girl), she was head down. 
It's so uncomfortable to have her head in my rib cage, and I am hoping for a natural, vaginal birth like last time. Csection is terrifying to me & I don't want to spend my maternity leave recovering from surgery. 
She's measuring big (limbs in 96%; husband is 6'5"), so I'm worried that it will be hard for her to turn in the coming weeks. 
Anyone have some tips or want to tell me not to worry ;)