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First pregnancy checkup, how did they get your due date?

  • poll: How did the doctor calculate your due date?
    LMP, with standard 28 day cycle assumed (aka the wheel) : (61 votes)
    47 %
    ovulation date : (9 votes)
    7 %
    IVF or IUI date : (6 votes)
    5 %
    vaginal ultrasound : (36 votes)
    28 %
    LMP adjusted for your cycle length : (9 votes)
    7 %
    something else, do tell :) : (2 votes)
    2 %
    abdominal ultrasound (when, please!) : (6 votes)
    5 %
  1. ChiCalGoBee

    nectarine / 2028 posts

    LMP, but I knew exactly when we'd conceived, so my due date and the doctor's were exactly the same. In fact, he asked me to "tell" him my due date (winking, of course), saying "I bet you know!" He then said "yes, you're right!"

  2. Mrs. Lemon-Lime

    wonderful pea / 17279 posts

    First, they asked me the start of my last cycle and I think even when I thought I ovulated or was fertile. Then, they rough calculated my EDD. Then, they did a vaginal US. Finally, they measured the baby and told me I was correct on how many weeks. Duh, FF was my record keeper and I'm a good record keeper! LOL

  3. winniebee

    hostess / wonderful grape / 20803 posts

    LMP but my office has you go in right away. Then an early dating ultrasound by 8 weeks.

  4. sslm

    cantaloupe / 6397 posts

    I charted and knew I had long cycles, so they took my word for it and went by ovulation date, however I did have a dating u/s later on to confirm (around 8 weeks)

  5. PurplePeony

    pomegranate / 3113 posts

    I have long cycles and knew approximately when I ovulated, so they basically asked what I thought it was, checked my calculations, and were like "yep, that sounds right." No dating US, but baby measured within one day of my due date at both the NT and anatomy scans.

  6. pastemoo

    cantaloupe / 6146 posts

    @MrsSRS: Good point. Thank you!

  7. mamabolt

    nectarine / 2797 posts

    First went off of my measured ovulation date, then confirmed with ab. US at 12w. Second went off of LMP and confirmed with vag US at 6w.

  8. JennyLayneAZ

    nectarine / 2690 posts

    TV ultrasound. Originally they went off lmp but that date was 2 weeks off. I told them I don't have 28 day cycles but they dodnt listen.

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