The solution? Find a better Ob. Sorry, but if he won't give you the credit you deserve for knowing your body, he doesn't deserve you as a patient.

FWIW, it seems so many in the medical profession are "stuck" on using the LMP to predict the EDD. It's bollocks for so many reasons. I conceived through IVF, which meant I was certain when I'd O'd, but I was still asked when my last LMP was - which, if used to predict my EDD, would have made me due 5 days earlier When I told the MW that I "didn't know" when my LMP was, she didn't know what to write on the form, as if I didn't fit into the box.

My FS was always surprised when I told him when I expected to ovulate and from which ovary - but I'd been TTC for so long that I knew my body better than he did. There's some things that Obs and FSs cannot do, and that is know your body the way you do.

GL hun.