Like several past posters, I did everything within my reach to ensure that I would have a natural, drug-free birth -- I had a doula, was birthing with midwives, took a natural friendly childbirth class, had a birth plan, and read everything I could get my hands on. I ended up with a c-section after laboring for 58 hours, and a) had developed a high fever b) baby's heart rate was slowing (probably a result of the pitocin, and c) baby was not descending even though I had progressed to 9cm.
I feel like my circumstances were unusual though too -- my water broke before my labor started, something I had not even thought of when planning my birth, and my contractions did not get going regularly until we started pitocin 16 hrs after my water broke...
So, even though I planned a drug-free birth I ended up with an IV (which I will absolutely deny for my next birth because I feel like it kept me from being as mobile as I would have otherwise been), cytotec, pitocin, an epidural, and a c-section, AND antibiotics for being diagnosed as strep B+.
I'm hoping to plan a VBAC home birth for my second baby.