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The size and development of the fetus viewed on the sonogram indicates the age and therefore gives a good estimate of date of conception. The age is more closely determined in early pregnancy and becomes a little less accurate as the fetus grows but it is still possible to estimate the age of the fetus throughout the pregnancy.

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Q: If you haven't had a period though only one sonogram how can you determine when you conceived?
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Related questions

How do you calculate due date if havent had period in 4 months?

I just found out that I'm pregnant and haven't had a period due to birth control and breastfeeding my first child. So, I'm in the same boat. I'm not sure when i conceived or my due date because I don't have a last period to go by. Any answers?


Would you still get your period if you conceived the day before your period?

. It was confirmed by my OB-GYN that I had conceived the FIRST DAY of my period. My period was on time and I continued to have a normal, regular flow 6 day period. Hope I helped!!!!


Hi I havent had a period since Jan 09 Im 19 weeks pregnant and my due date is 4th Jan 2010 How can find out when I conceived?

Based on you're due date you most likely conceived april, 13 2009. If you had an early ultrasound in you're first trimester then you're due date is pretty accurate.


If you had unprotected sex a A week or Two before your period and you still get your period could you be pregnant and just havent conceived yet?

In theory, you can't since you got your period which means that the zygote did not settle or the ovule was never fecundate. However, this is kinda weird since there is, for all women (and girls) exactly 14 days between the release of the ovule and the start of the period.


Is the scan date from your last period or when you conceived?

The scan date is from your last period.


What else can make you miss a period?

i havent not started my period for September or october


Who also conceived of evolutionary period?

Charles Darwin


Can you be pregnant if you got dead sperm in you and havent get your period?

no


Havent had a normal period since May 14 hardly bleed at all when you get your period?

same with me.


Spotting 6 days before period due then lighter than normal period for 2 to 3 days could you be pregnant as period not due for another day?

Pregnancy is a possibility but it's slim. I would recommend that you perform a pregnancy test in 2-3 weeks to determine if you have conceived or not.


How do you finger yourself if you haven't had your period?

having period has nothing to do wit masturbation.So you can finger your self as usual if you havent had your period.


Conceived straight after period boy or girl?

50% chance of either.