Hi
I had a c-section and just used a pillow to support my little one on when breastfeeding her. I also fed her in what they call the rugby tackle (body underneath your arm, so no pressure is being placed on your scar) By the time I got home 3 days later I was feeding her the normal way using a breastfeeding pillow.
I agree with Charlie, take some arnica as it really helps with the bruising, you can buy it from boots, and do get as much help as possible.
I can remember the drive home from the hospital and saying to my OH, make sure you miss any bumps in the road or pot holes. When you drive home from hospital, place a towel over your scar and then the seat belt over this, I would carry on using a towel if you are being driven anywhere for a little while longer.
I would also ask someone to take your dressing off for you. I was told to do it on my own in the shower at the hospital, but it was really difficult as my belly was still big and i couldn't see the dressing properly, if you've got a sister/mum they could do it or maybe one of the midwives, if not see if they'll let your partner in the shower with you, to take the dressing off.
Good luck I hope it all goes well for you and take really good care of yourself and don't overdo it. x