Agree that trying to keep moving ASAP is good. Little and often as it can feel like a real effort. And when up try to consciously stand up straight as very tempting to hunch over but this doesn't help. Have had three, and anaesthetised for thousands...
Drink plenty. I found a bottle with a sports too stopped me pouring it all over myself when in bed.
Take the painkillers regularly even if comfortable. Once you feel sore it can take a while to play catch up.
Constipation and trapped wind are very common and hurt a lot. Ask for regular lactulose. Some hospitals can give you peppermint water for wind, some don't. Taking my own and taking it regularly helped loads.
I found clothes that supported but didn't rub worked best, had some yoga trousers with a deep waistband that I could fold over were best, and looked less like pyjamas when I had visitors.
Once home try to get out every day. The first few days even a 100m shuffle in the sun made me feel more sane. Was doing the dog walk albeit slowly by about ten days.
I found Pilates put me back together again really well afterwards. Some great videos on line. Check that they are postnatal specific and ok for post section. Good one on pilatesbygeorgia.com as a start point.
Good luck xx