Mumma2B

Hello Ladies.

First of all I apologise if this is long, but I really do need advice from anybody if possible.. please bear with me!

I'm currently in the first Trimester of my first pregnancy.. To confirm my pregnancy after my bloods came back positive, my doctor had me go for an ultrasound. According to my EDD (taken from first day of LMP), I was supposed to be 6 weeks & 6 days pregnant, however when I had my scan done the ultrasound doctor said that I was 5 weeks and 6 days pregnant!

This makes sense as I usually OV on the 17th/18th day of my 28 day cycle.. so the baby would def be younger than the estimated 6 weeks and 6 day cycle.

However, I was told to come back today for another ultrasound, exactly 7days later, (because last week it was too early to see a heartbeat). Today they said I was only 6 weeks and 4 days pregnant!!! (Which makes the fetus 2 days younger than it should be seeing as 7 days have passed - not 5).

WHY is it that ultrasounds come back with different ages and due dates of the fetus each time you get a scan done?

Is it normal for scan's to be 'off' by up to 5 days this early in the pregnancy?

(I heard that the earliest scans you get are the most accurate in dating, but the 2 I have had have said two different dates?).



Thanks for reading this far,

xox

Carley

I had the same problem I went for a scan and the baby was measuring 1 whole week behind. When do you go for your next scan?

Blah11

Yes I think this is quite common. It's just an estimated due date so I wouldn't worry TOO much about it. A day or two either way won't make much difference.

polo_princess

In the early stages its easy for it to change by a few days dont worry

khartnett

Hi hun when I went for my dating scan they put me back 3 whole weeks. x

moomin_troll

This is normal my doctor said i was about 7-8 weeks pregnant when i first found out but that week due to bleeding i had a scan and it confimed that i was 6 weeks. You cant predict a womans cycle just go by the scan date

avistar

I had the same thing happen...the scan put me back 5 days. There is no way of knowing when the egg got fertilized and implanted...so the start of everything might be later than you think. I wouldn't worry

kadey

i had my first scan and i thought i was about 11weeks, they put me back to 8+4. went for a second scan (which i should have been 9+6) and they put me at 9+3. im not worrying about it too much and neither should you. aslong as they found that heartbeat thats all that matters
good luck
xxx