Conception date help

[Pinkpanda24]

I’m 21 weeks pregnant and my EDD is October 30th . When roughly did I conceive ?
Getting mixed dates constantly .
Due to my lifestyle at the time I just would like to know for my own peace of mind really .

Ovulation around 7th feb - give or take a handful of days because it’s an estimate based on the baby’s size at the size at the 12 week scan.

You could have ovulated around 4-10th Feb (just putting a 3 day accuracy on it but who knows) which is then fertilised very quickly after (egg only lasts 12-24hrs at most). Then you could have sex up to 5 days before that so 1st Feb until 10/11th Feb for the range when sex could have happened to count. It could possibly include the end of January I wouldn’t rule it out but it’s more likely to be in the range above I would guess.

You might know the days you had sex, but if you are asking then I’m guessing you didn’t track and don’t know when you ovulated.