Exactly, Trill - even when you think you're in tune with yourself, ther's someone with a framed certificate saying you couldn't possibly be. My MW changed the EDD when I 'went over' because I told her when implantation occurred. Had I told a GP how I knew they would have insisted I go by something more 'reliable' like LMP (which was proving UNreliable!) or a scan. It was very reassuring to have this discussion with my MW and to then have my baby about 2 days after the 'new' EDD
We HAVE, in general, lost how to intuit our bodies because of the prevailing culture of consultation, specialists and scanning. So, my answer to the OP question is 'yes, women are out of touch with themselves a lot of the time, for various reasons and now we just take it for granted that this is the case and distrust women who are taking it back'. Medicare rebates for health professionals are the sweeter for it, too.
ETA: My comments are separate from the women who are curious to see their babies again. I know women who just wouldn't have a clue about their cycles, and absolutely clueless about what's going on with their bodies - it's not so much an indictment on them, personally, but on our culture.