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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How To Find Date Of Conception?

Here are the dats
May 19- slept with other man
June 13- last menstrual period
June 27- slept with boyfriend
August 9 - 1st sono (crown to rump) 8 weeks
August 17- 2nd sono 9 weeks and 3 days
August 24- 3rd sono 10-11 weeks
Sept 3- 4th sono 12 weeks and 2 days
Could i have mistaken vaginal bleeding for my period on June 13?
How likely is it that the May guy is the father?>
Tue, 1 Dec 2015
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OBGYN,  's  Response
Hallow Dear,

The ultrasonography estimation of pregnancy may have some variation for about few days during early phase of pregnancy. However, the serial ultrasonography reports are indicating that your ovulation and conception could have been around June 13. However, you did not have any sexual relation between May 19 and June 27. This size does not match the conception on May 19 also. Did you have any sexual intercourse on or around June 13-15? That period seems to be the day of conception.

The other possibility is large baby which has been conceived on June 27 or small baby conceived on May 19. The later possibility is remote.

I would advise you to wait for a couple of months to assess the age of gestation since as the pregnancy advances, the period variation in ultrasonography minimises.

If you are so keen on ascertaining the paternity, you may opt for DNA test.

I hope this helps you.

Dr. Nishikant Shrotri

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How To Find Date Of Conception?

Hallow Dear, The ultrasonography estimation of pregnancy may have some variation for about few days during early phase of pregnancy. However, the serial ultrasonography reports are indicating that your ovulation and conception could have been around June 13. However, you did not have any sexual relation between May 19 and June 27. This size does not match the conception on May 19 also. Did you have any sexual intercourse on or around June 13-15? That period seems to be the day of conception. The other possibility is large baby which has been conceived on June 27 or small baby conceived on May 19. The later possibility is remote. I would advise you to wait for a couple of months to assess the age of gestation since as the pregnancy advances, the period variation in ultrasonography minimises. If you are so keen on ascertaining the paternity, you may opt for DNA test. I hope this helps you. Dr. Nishikant Shrotri