I'm on the same boat doctor told me to prepare for c section I'm 35wks 4 days,
They can change position right up until labor so you should be fine!
I went for the 3d ultrasound at 32 weeks and he was head down and ready to go. I went to my doctor the following Monday (at 33 weeks) and he was head up by my ribs. They just flip around all willy-nilly right now. Don't fret.