+ Reply to Thread
Results 1 to 4 of 4
  1. #1
    Join Date
    Feb 2011
    Location
    Lane Cove
    Posts
    100
    Thanks
    86
    Thanked
    35
    Reviews
    0

    Default NT scan dating

    I've got different dates according to ultrasound and to my last period, and that's so confusing!
    Did anyone have similar situation?

    My last period was 14th Aug, which means I'm at week 9 now, but I had an US on 5th of Oct and they saw it's only 5 weeks 6 days that time, so 7 weeks 3 days today, which is 1,5 weeks behind the "last period" timing.

    I've booked an NT scan, and they told me I have to do it according to the US dates, not period, so they booked me on Nov 15th, but I'm still worrying about it - because of that difference with the period calculations, can it turn up I'm too late for the NT scan?


    Or US calculations are more reliable than last period ones?
    Last edited by Irinko; 17-10-2012 at 21:40.

  2. #2
    Join Date
    Aug 2012
    Posts
    322
    Thanks
    437
    Thanked
    69
    Reviews
    0
    Well for me my US date is more reliable (than the GP calculating due date on last period as she wouldn't listen to me).

    I have a long luteal phase so I implanted 21 days after I ovulated, not the normal 10-14. She tried to tell me I would have a due date of 26.02.13 but I was adamant it would be the 02.03 or 03.03. The dating scan at 8 weeks (as estimated by GP) gave me a confirmed due date of 03.03.13 which means from my LP calc to dating scan there was a difference of 5 days.

    Timeline...... LP 21/05 (9 day bleed), ovulated the 05.06, DTD 04, 05, 06, implanted 26/06. So had I ovulated late and therefore implanted later, my dates could easily have been wrong by more than just the 5 days.

    Hope this helps explain that it is possible to differ, doesn't mean this is what happened to you but it was my experience.

  3. #3
    Join Date
    Feb 2011
    Location
    Lane Cove
    Posts
    100
    Thanks
    86
    Thanked
    35
    Reviews
    0
    Thank you!
    I thought of longer cycle as a reason, I have 33 days and probably that's not getting into standard mid-cycle ovulation calculations

    But I still not sure if that's ok with the NT scans timing - even when 2 people, my GP and hospital staff, told me

    Just fell I'll be really dissapointed if I come there and they'll tell me it's too late to see that things which should be visible only until week 13...

  4. #4
    Join Date
    Aug 2012
    Posts
    322
    Thanks
    437
    Thanked
    69
    Reviews
    0
    If it's any help the ultrasound dude I see (been doing it for 20 plus years) advised (and the lady that did mine confirmed) 12w5d-13w5d is the 'ideal' window but a week either side of that apparently doesn't make any major difference.

    I'm sure you will be fine and your dating scan really is more accurate


 

Similar Threads

  1. Dating scan
    By Shaz2184 in forum First Trimester Chat
    Replies: 5
    Last Post: 18-05-2013, 14:28
  2. Dating Scan
    By BlackCat181 in forum First Trimester Chat
    Replies: 25
    Last Post: 07-12-2012, 22:09

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
free weekly newsletters | sign up now!
who are these people who write great posts? meet our hubbub authors!
Learn how you can contribute to the hubbub!

reviews
learn how you can become a reviewer!

competitions

forum - chatting now
sales & new stuffsee all
TriBalance Health + Wellness
Brisbane Pregnancy Pilates Classes TriBalance Health + Wellness
Run as part of our Clinical Pilates program by an experienced physiotherapist. Programs are individually tailored and classes are 60min, scheduled on Saturdays at 9am and 10am. $38 per class or a 5 class pass for $175. (*health fund rebates apply)
SAVE when purchasing 5 classes!
featured supporter
Tribalance
TriBalance is a physio, yoga & pilates studio in Brisbane's inner north, offering specialised women's health physiotherapy services. Weekly pregnancy yoga classes are scheduled at the studio on Thursdays 1- 2pm and Saturdays 1-2:15pm.
gotcha
X

Pregnant for the first-time?

Not sure where to start? We can help!

Our Insider Programs for pregnancy first-timers will lead you step-by-step through the 14 Pregnancy Must Dos!