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Pregnancy

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Need help with conception dates!

37 replies

Ruby46 · 23/02/2015 17:20

Hello, new to this so hope I'm writing in the correct place! I'm a little confused and would like a little help on when I possibly conceived. Unfortunately I don't know when my last period was. I had intercourse on 16th December and 26th December. On the 1st January I had what I have been told was an implantation bleed, it was slightly heavier but definitely not a normal period. I had a scan last week and was told I am around 8 weeks 2 days. Obviously considering the scans can be a few days out, would I have been more likely to conceive on the 16th or 26th as I had the bleed 5days later?
I hope that all makes sense. I have asked my doctor etc but they don't seem very willing to help me.
Thank you

OP posts:
knittingirl · 25/02/2015 16:33

I agree with pp. You are 8 weeks - that's how they date pregnancies in the UK. 8 weeks pregnant MEANS 6 weeks since conception - the sonographer doesn't have to deliberately add any time on.

For comparison - my LMP was on 7 Dec, and I ovulated/conceived around about 23 December, and I am just over 11 weeks pregnant.

Choccyhobnob · 25/02/2015 16:57

I've commented on your other thread but everyone has explained this better, sounds like you conceived on the 6th January.

BonnieLouise · 26/08/2021 08:28

Can this be right ? According to my scan, i would have conceived around May 22.
Are scans accurate though for saying this ?
Which don’t make sense to me as my last period was 14th May to 20 May
I’m all new to this 😂 will be my first baby

JuneySunshine · 26/08/2021 12:51

Hey,

For your conception date you need to take the babies age at the scan
E.g. 16 weeks, then take away 2 weeks = 14 weeks, then work back 14 weeks from the day of your scan.
The two weeks is to allow for the time the egg was developing pre conception.

Hope that helps 😊

BonnieLouise · 26/08/2021 14:20

Okay thank you 😊 I was 12 weeks and 6 days on my 12 week ultrasound which was on 6th august
I will try work it out 😂

BonnieLouise · 26/08/2021 14:24

I got told at scan was 22 May

BonnieLouise · 26/08/2021 14:46

Scan dates are not accurate! Apparently they put you a few days forward or a few days back so it’s all confusing to me

BonnieLouise · 26/08/2021 14:53

W

BonnieLouise · 26/08/2021 14:54

Apparently you take away 266 from your due date 😊🙂 which gives me the 22nd May to

JuneySunshine · 26/08/2021 18:35

Yes I get the same @BonnieLouise does seem odd to have ovulation so soon after your period.
At my recent scan I was told they could be 2 days out either way.

BonnieLouise · 26/08/2021 19:47

It’s all confusing can scans be accurate with how many weeks you are ? as was put 6 days forward to what i thought i was.

BonnieLouise · 26/08/2021 19:54

At my Scan i was told you would of conceived around 22 May
Or 22 May plus or minus a few days so it’s confusing could of been a few days after the 22 May or a few days before 22 May

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