Based on my LMP my EDD is 27th September, however, this states that the date of conception is 4th Jan. However, I know for a fact that we on 9th Jan, so how would I work out my EDD from that as I think the EDD based on my LMP is wrong.
Obviously I know my 12 week scan will date me, but I wanted to have the estimated dates for when I see the MW on 2nd March.
Im in excatly the same boat as you, I know the exact day that this baby was conceived, im just going to tell the MW that since my d&c my cycles have been a bit shorter and that I know the conception date was 16th Jan.....Roll on dating scan hey!
You can do 'Due Date Calculators by conception date' online. Just type exactly that into google and you should find one. My EDD by LMP is 29th September, but by conception date is 27th September and I know we conceived on the 4th as I was using OPKs. If it's the same as last time though the midwife will ignore this info and only go on the calculation for LMP28days!
The thing with using your conception date specifically will come in when you have to factor in days for fertilization and implantation as both of those can take 5ish days (up to a week has happened for some women before too)
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