How accurate is the dating scan? My hubby and I had our first sexual intercouse with ejaculation on the week of July 25 after I move in to the new house. On 12 July( a day before our ROM), there was no ejaculation (due to his covid previously which might affected the performance)😅 Kinda remembered these 2 dates as it was a milestone in my life.
When I did the dating scan on 13 Sep in KKH, I was extremely shocked that I'm on my 9th week of pregnancy. Shouldn't it be the 7th week based on the week of 25th July? Prior to 12th July, we have been doing the deed without ejaculation and it has been fine.
The doctor told me based on the size of baby it has to be 9th week.
My EDD is dated 18th April 2023. My last menses was from 25th to 30th June.
How was the dating scan calculated? Is it accurate?
Just more of curiosity, but I am still very happy to know that I'm pregnant.
Some context: I have irregular menses since young, ranging from 1 to 1.5 or even 2 months. Hence, I didn't discover it earlier.