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Texarkana, TX
A 26-year-old female asked:

I am 5 weeks today how did i conceive on april 5 if i haven't had sex in april my lmp was march 21

1 doctor answer1 doctor weighed in
Dr. Charles Whiting
Obstetrics and Gynecology 27 years experience
Dating isn't precise: 14 days is the average time between the first day of your menses and ovulation/conception. It could be 12 days. Also, sperm can hang around for 3 days. So for example, if you had intercourse on day 10 (march 30), and ovulated on day 13( april 2) you could be 5 weeks without having sex in april. The error in the measurement of u/s measurements in early pregnancy is +/- 5 days.

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Last updated Apr 29, 2014

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