This is the seventh installment of Barren Advice. You can ask questions that are fertility or non-fertility related.
Barren Advice is posted each Tuesday. If you have your own question for Barren Advice, click here to learn how to submit. Please weigh in with your own thoughts in the comment section and indicate which question you're addressing if there are multiple questions in the post.
I have just found out I am pregnant (naturally after IF!) but am wondering what to tell the doctor about my cycle dates. You see, I didn't ovulate until CD25. So the typical week count from Day 14 will not be accurate to measure growth and predict due dates. But we all know how well doctors listen to what we have to say. In my experience they usually decide (in a somewhat patronizing way) that I am mistaken but I know I'm not. I temp every day and am very aware of when I ovulate. Also, I use TCOYF software.
I suspect that the Doctor will still want to count my 40 weeks from my CD1 which was April 19. This will throw off calculations by almost 2 weeks. Should I fudge my dates? Should I tell them that CD1 was April 29 in order to reflect CD14 ovulation date which is how they calculate the 40 weeks? Would there be any harm in this? I just don't want to go through the next 40 weeks explaining to every nurse and ultrasound tech that I actually ovulated on CD25. (Assuming that my pregnancy lasts that long.) I know that this seems like a trivial problem to have but I really don't want to have miscalculated times the whole way through.
--Skygirl at Chasing Blue Sky
My gut says to work from a place of utmost honesty. State the start date of your cycle and the date you ovulated. A doctor who is not willing to work with you to calculate the correct due date and trust that you know your body is not a doctor you want to remain with during the duration of the pregnancy. Switching doctors is easier said than done, but problems can actually arise that go beyond the panic you'll feel when you hear your embryo is measuring behind.
Not using the correct date of ovulation can throw off all testing that is time sensitive--CVS, amnio, AFP tests (alpha-fetoprotein). You may be induced early believing that you've reached your due date--and induction does carry more risk and a higher chance for a c-section than natural labour. It's one thing when induction is unavoidable, it's another when it's being done simply because a doctor will not listen to you when you know your ovulation date.
Back up your words with evidence such as the TCOYF software and a copy of your chart. And truly, a doctor who is rigidly set on Naegele's Rule and can't listen to facts or wishes is giving you a sign that they most-likely will be inflexible later on when you decide you do or do not want other changes to standard protocol.
Another route is to ask your doctor to do a series of ultrasounds early in pregnancy to help determine the correct due date based on growth. The ultrasounds are most accurate before 12 weeks. There is a margin of error as there is with any ultrasound, but you will still be able to get a better sense of the correct due date once you bring together all of the information you have on hand (LMP, the ovulation date, and ultrasound findings).
Stand your ground and put on some ass-kicking shoes before that first appointment just in case you need to kick a little ass in order to have reality heard.
No really, the beauty of a blog advice column is that you get to weigh in with your two cents too. Let the questioner know if you support the advice, add to the response, or dispute it completely.
Leave a comment in the reaction box below--only keep in mind that conflicting advice is embraced and rudeness is not. Want to ask your own question? Click here to see what you need to send in order to be included in a future Tuesday's installment of Barren Advice.