Hi kittylainy,
i had the same questions as you do when I was pregnant. (my precious baby girl is now. Six weeks!)
it's very common to poo when pushing during labor. I did not, because when my contractions started at home, I had the urge to push like that, so I went #2 at home twice. That's ideal if it's possible. Don't be embarrassed if you do poo while pushing, it's completely normal. It's actually the right way to push, and boy does it feel like a. Giant bowel movement is coming through!!!!!
That's funny, cus I watched tlc's "a baby story" religiously while pregnant and I noticed drs and nurses telling moms not to scream as well. I did not scream during labor, but my nurses and drs said it was fine for me to make noise, because I did. Really, it's hard to scream during the push, bc you're so focused and you're also holding your breath. It got to the point (for me) that I was holding my breath for longer than 10 seconds to push and my husband would have to tell me to breathe. I got sooo mad at him! Lol. I just wanted baby out.
It's. Not a good idea for you to drive yourself to the hospital. I recommend calling a friend/family/cab etc.
I did not take any classes, and i'm glad, bc I did fine during labor. It's important to have a nice nurse, as did i, who helped me through the contractions. It's pretty simple, the breathing techniques. My husband and I rented a lamaze tape and it was so boring, I fell asleep! We're so glad we didn't pay money to attend classes!
Good luck to you. It is so worth everything you go through when you have your baby. You'll know what i'm talking about after baby arrives.
~ctrule