For me they were by FAR the worst bit of childbirth. I can push a 90th centile head out no issue. Contractions were enjoyable compared to the few days after with what one hospital worker described as "the worst piles I've ever seen"
Anyway ever since then my bum has never been the same. If I stand too much, walk too much, god forbid do too much jumping... if I don't go once per day and if it's not the exact softness... I get them come up again!