Advice please: small pelvis 😕

When I went for my checkup this week, the dr said she was concerned that my pelvis is small and I might not be able to deliver vaginally.

She said it was possible it could still open up over the next couple weeks. But she gave me an 80% chance of needing a c section.

Wondering if anyone else had been told this and what the outcome was?

Also, if anyone has any tips on how to open up/widen the pelvis. (I was really hoping for a natural birth).

Note: I’m currently 36w5d and baby is estimated at 6lbs 13oz already.

Thanks!