Hi Tanz,
I was also super stressed about the poo bit! my widwife told me that the worry about pooing actually makes many woman hold back a bit in pushing.
I had a private midwife assisted delivery in a hospital (so that if things turned badly there'd be people in white coats around to help). Ben was born 3.5 hours after I arrived at the hospital. I had ~1 hour of absolutley excruciating labour (though climbing in their water bath did help) and ~20 mins of pushing. My midwife encouraged me not to yell, and to rather channel that energy into the push... she was amazing. she told me exactly when to push hard, when to stop and when i was threatening to walk out (or kill myself! haha) she read me the riot act! its funny, Ive never ever hear any stern words out of her mouth but in that moment i clearly remember her sternly telling me (after my wails of 'i just cannnnttt')... "well, you just have to!"
I didnt tear at all. and no poo

I'd love to say I felt super strong and invincable, but when i think back the biggest feelings were HUGE relief that it was over and complete exhaustion. Ben was born at 9:15 pm, I fed him immediately, the nurses took him to the nursery and brought him back to me every ~4 hours to feed through that first night. I actually got a lot of sleep and felt almost like my old self the next day. actually... the next day is when i started to feel very proud of myself, that i managed it without any pain meds (I did try the gas, but it just made me vomit).
To me the best bit about natural child birth is that your baby gets to pick his/her birthday. They arrive in this world when they are completely ready and not a moment sooner. I just find that so much more exciting that scheduling something. (maby is the drama queen in me!)
anyway, just wanted to share that natural birth does not need to end in tears and stitches. for me though it was indescribably sore. i wont lie... the idea of that pain ahead of me now is making me quake in fear. but at least it was over quickly and other than the 3 weeks of bleeding (which no-one told me about, and which i hated)... it was all over in an eye-blink.
Hope you get the birth you are wanting Tanz