Like Miss E I had a c/s (for both of my births) and since DD's birth we have not yet managed penetration due to thinness/dryness. She's close to 8 months old, and still almost exclusively breastfed - she hasn't really taken to solids much yet. Because of the skin thinness lube doesn't really help. Some doctors will prescribe oestrogen pessaries, which does help, but is likely to reduce supply. So it's not just those with vaginal births who have problems, I'm sorry to say.