Hy Mommies . 1st Scan today and it says I'm 8 weeks zbx 6 days. How do I calculate date of conception? Do I go 8 weeks and 6 days back?

Question

How do I calculate date of conception?  Scan says I'm 8 weeks and 6 days pregnant 

Answer 1

8 weeks 6 days will be the days since the first day of your last menstrual period. 

if you have a 28day cycle then you ovulate average day 14. 

So if you go back 6weeks 6 days, that takes you roughly to conception time.