SPD and natural delivery

I have SPD, and my dr is saying that i can deliver naturally, but that if I have an epidural I won't feel if my pelvis is being over extended and when it wears off I could be in excruciating pain - has anyone else heard this? She's saying alternate birthing positions like on all fours or on the side is best. Is anyone just electing for a c section instead of chancing the extra pain??