Have you spoken to anyone about positioning? I'm sure there would be some midwives out there who have helped birth babies in you situation so maybe thats something you should look into, ie. birth positions that would give more room between bubs & your coccyx.

I'll have a search around and see what I can find.

I'm sure Kelly could do some research for you too! Maybe even ask an expert?

Goodluck!

*hugs*
Cailin