A 47-year-old male asked:
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when you had sex on aug 21, how many weeks will it appears in the vaginal ultrasounds result? just on that day.. ultrasound was taken on oct 10

1 doctor answer
Dr. Pavel Conovalciuc
22 years experience Family Medicine
It depends on LMP: The ultrasound measurement will be reported in gestational week from the day of conception. When conception took place is impossible to tell by the information provided. It is on or around the ovulation day that usually falls on the middle of the period. If you are certain of your last menstrual period, just do calculation on pregnancy calculator and you will how far along you are.
Answered on Jan 30, 2014
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Dr. Jumnah Thanapathy
45 years experience Obstetrics and Gynecology
Gastational age is calculated from your last period not date of conception. So you should be about 9+ weeks if you have 28 day cycles.
Oct 17, 2012
Dr. Pavel Conovalciuc
22 years experience Family Medicine
Provided original answer
Well, what you said is true, but I meant ultrasound measures actual size of the baby from the day the baby was conceived, while the gestational age by LMP adds another 2 weeks which are not pertinent in case of US measurement.
Oct 17, 2012

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