Our car insurance didn't cover me for 6 weeks after my csec (lots don't so it's a good idea to check), but I didn't feel like driving anyway as we have a manual and you don't realis how many belly muscles it takes to drive. I had to at week 4 for 10 minutes but it was still tender inside and I didn't again until 6 weeks.
Other than that I went shopping day 7, walking from 2 weeks.
It's all about how able you feel.