I'm sure you can get bc before your post partum appt, but as you're not supposed to have sex untill then, i'd wait. Even if you think you;re healed, you may not be.
As for the brestfeeding, so what you think would be best for the baby. I breastfed trey for the first few weeks but had such probs and he lost almost a pound in 5 days, that I had to put him exclusively on formula by 6 weeks. He's a very smart, healthy (well he has asthma, but it's not from formula) toddler, so do what's best for her and you.
Sh*tty about the car.