Quoting Will☮Creedence:" <blockquote><b>Quoting I'm me:</b>" The water is there to support and protect the ... [snip!] ... to produce amniotic fluid. My water broke, leaked a little and stopped. Obviously not every single case is exactly the same."
This. Agree with your other posts too.
Your chances of infection are extremely low if you don't let anyone stick their hands in your vagina after your waters have broken. It's the ridiculous checking for dilation that introduces bacteria. And like you said, you don't run out of water when your water breaks.
Risk of prolapsed cord with spontaneous rupture of membranes is extremely low as long as there are no interventions, like pitocin. It's artificially augmenting labor and artificial rupture of membranes that puts you at risk for cord prolapse.
OP, your doctor, like so many in America and Canada, is not practicing evidence-based medicine. Search for a provider who supports vaginal breech delivery, fast.