Tilted Pelvis Affecting My Delivery

I'm only 14 wks pregnant, I've already had my first prenatal appointment, and I just remembered that I had a diagnosis earlier in the year that my pelvis was tilted due to a car wreck that I had in 2016 which is the cause of my back pain for the past 3 years.

The physical therapist told me that from doing the exercises, it was better, but it still was tilted and there wasn't a whole lot they could do about it which is a bullshit lie.

When my sister was in delivery, her pelvis was positioned differently and after hours of pushing they had to do an emergency C-section.

Does anybody have knowledge about this topic?

I'm getting quite antsy because I'm really trying to avoid a C-section at all costs.