I didn't need to press anything against my scar. I used mat pads for a week then panty loners. Mine wasn't that heavy.
Could of drove after first week but car seat is a no no.
Went for a walk along the promenade for half hour pushing pram after first week. Felt I could of done more.
My main problem was getting up from our low couch. I bent over so my chest was on my knees then stood up using thigh muscles and then straightened up. I made a point of making sure I was stood very straight at all times and not hunching