how do they date it?

[xxKateBxx]

Me again,

just thinking, do they date your pregnancy from the first day of your last period? or how do they do it?? For example if I got pregnant on this cycle and found out on cd26, would I be nearly 4 weeks gone?

just trying to get my head around it all

ta
xxx

 

[Donna's here]

Hi Kate. Congrats x x x
They do it from your 1st day of your last period but will do a growth scan at 12 weeks which will say 12 weeks, or 13 weeks and 2 days or so on which then goes more by the day you conceived.

 

[EllieBelle]

Yes they always go from the date of your last period, as many women dont know when they ovulated so cannot use that date!

In effect the baby is always 2 weeks behind you - ie you might be 10 weeks pregnant and the fetal age is 8 weeks - its a bit strange but thats the way its been done for years!

Your 12 week scan will then determine a more accurate date if necessary.