Belly Out

how to calculate due date
ckwtime asked:


I have read somewhere that it is only off 1-3 days at most in either direction. Can you use this date to calculate conception if you don’t remember exactly when it was?
I’m talking about in the first trimester

6 Responses to “Is it true that a first trimester transvaginal ultrasound is extremely accurate to calculate due date?”

  1. Jill

    Yes, the earlier the ultrasound the more accurate it is, within about 5-7 days at the most. It can’t tell within 1-3 days with any certainty.

  2. Kayla C

    i did it with both of my babies within the first 8 weeks, its very accurate and you can see the little baby so much better this way!

  3. Army Bride 7/23/08

    well it can probably estimate your date of conception… but ***** can live in the uterus for a few days and you don’t actually conceive until you’re about “2 weeks pregnant”

  4. sahar b

    mine was the first time..the due date i was given was 16th december.. my son was born in the early hours of 18th december. now im given the due date of 9th march… im hoping the baby comes on the same date..

  5. Skatin'

    Yes, that’s what my doctor told me. We had a situation where we didn’t have a clue about my conception date, so she went by the earliest ultrasound dating. There are certain milestones that are easy to identify having to do with organ development (what develops when).

  6. SidnEy08

    yes. I believe they were 1 day off for me.

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