Another thing that DH has just reminded me of - when we put nappies on him he complains that we are hurting him - even if its just doing up the snaps or whatever, and he never complained about it before, but the last month or whatever, he's been like "ow ow" whenever we put one on him. Dunno if that has anything to do with it? We don't press it onto his skin, we have our fingers under the snaps..