Dates not similar!

[InTheMiddleOfIt]

Hi all, we had ICSI and now we got blessed with a pregnancy, as it was ICSI there is no guessing of when we got pregnant last Friday was 7 weeks but the scan showed 8 weeks and 6 days! I m only asking as I m suffering nausea and sickness and I m hopeful that it might follow the baby's development not the real count.

My question is can anyone explain why such a difference in dating the pregnancy?

[Aimaim77]

Congratulations . Someone was trying to explain dating to me yesterday . I'm 3- 4 weeks pregnant and have scan booked for 20th June, when I should be 5 and half -6 weeks pregnant by then , but apparently they date it from your last period . So you have to add another few weeks .

I still don't really get it . Lol xx

[InTheMiddleOfIt in reply to Aimaim77]

Hi Aimaim77, once I told them about the ICSI no one asked me about my last periods as the drugs stop the cycle before conception. The 8 weeks 6 days was given from the baby's measurement on the scan while the due date was given based on egg fertilisation.

[Debukf in reply to Aimaim77]

How have you got a scan @ 5-6 weeks? Is it a private one? xxx

[InTheMiddleOfIt in reply to Debukf]

As it s ICSI they do a viability one before the discharge you from the assisted conception unit.

[Debukf in reply to InTheMiddleOfIt]

Oh i see! thank you for verifying that for me and wish you all the best xxx

[InTheMiddleOfIt in reply to Debukf]

Thank you.

[Tlove]

Haha, that was me trying to explain how the dates work! Best thing is to just use this handy calculator based on your ec. fertilityfriends.co.uk/inde...

Medically, they always add on 2 weeks because in a natural cycle, date of ovulation is unknown so they go from day 1 of last period, which is usually 2 weeks before ovulation and in your case, 2 weeks before ec.

I am so surprised that your clinics didn't explain any of this, why do they assume people know if you haven't been pregnant without IVF.

[InTheMiddleOfIt in reply to Tlove]

Tank you i ll give it a read.

[InTheMiddleOfIt in reply to Tlove]

The due date is exactly what I counted and the baby date is exactly what the nurses measured, handy little tool thank you Tlove.