Every woman is different some babies flip at the last minute some flip back and forth more then once. You still have plenty of time to go and most doctor's will check around 36/37 weeks to see how baby is laying and sometimes they can do an inversion where they push around and try to force baby to flip into position before resorting to c section. I would say that baby's position isn't something to be stressed about right now.
My son has been flipping constantly then at about 34 weeks he went heads down and has been that way(im 36 wks)
My baby been head down since 17 weeks now almost 29 and she still like that