Breeched baby flipping?

I'm 35 weeks and baby was still breeched last week, last night he stared moving a TON and then I felt really nauseous for a little while. It went away and now I feel more space under my ribs and kinda like he's turned over, hiccups today felt low in my hips then high again. Pelvis feels broken, at last appointment dr said baby was BIG and i may need an aversion so im Not sure if this sounds like he's flipped on his own or not. I lost my mucous plug Saturday so I was thinking maybe these are all symptoms of him getting into place? My other two were always head down and 5-6 weeks early.

Cant really tell unless you have an u/s or the dr feels where the head is. I wouldnt worry just yet though.