I've heard good things about the Gaskin book too. I talked with my new neighbor about this, who's a nurse-midwife, b/c my first baby was born as an unplanned C-section and I don't want to do that again. Her best advice: Get in shape! She said if she had to point to one thing that makes the difference, it's that her fit moms almost all have natural births or at least easy vaginal ones (even as VBACs, which is what we're hoping for) and moms who are less physically active are more likely to go through interventions.
Agree with previous poster though: educate yourself about the possible interventions. There can be a sort of daisy-chain effect where one makes it more likely that you'll have another, and another... and before you know it, it's the epidural, and then the pitocin, and then the C-section...
at 3:34 PM on May. 23, 2011