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A 21-year-old female asked:

my lmp was on the nov 18 2009 i had sex with my boyfriend on the 23rd an then my bestfriend the 28th my due date was on aug 25th 2010 whos the father ?

1 doctor answer1 doctor weighed in
Dr. Louis Krenn
Family Medicine 20 years experience
Paternity test: Going by the dates you provided, it is more likely that you conceived on the 28th, but because cycles can vary and our models are based on a 28 day cycle, it may not be accurate. Both instances were close enough that only a paternity (dna) test will answer your question.

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Similar questions

A 17-year-old female asked:

I had sex with some1 on sept 6th n a diff person sept 29th my LMP is sept 7th n my due date is june 14 who has a higher chance of being the father?

1 doctor answer3 doctors weighed in
Dr. David Barrere
Obstetrics and Gynecology 9 years experience
See below: If you had sex with someone on 9/6 and started your period on 9/7, that person cannot be the father of your baby if that is the only sexual encounter. The 9/29 sex would have been on d22 of your cycle, which is more than a week passed your predicted ovulation. I'm betting on 9/29, but you should see your doctor, confirm your dates and go from there.
A 21-year-old female asked:

If my ovulayion date was oct7 an my due date june30 an i had sex oct12, 13 could he be the father..

1 doctor answer2 doctors weighed in
Dr. Charles Davant
Family Medicine 49 years experience
Possibly.: Did you have sex on the 5th, 6th, 7th, 8th, 9th, 10th or 11th? If so, maybe since you can't be that sure when you released the egg.
A 19-year-old female asked:

My due date is febuary 19 2014 and my LMP was may 14 2014. I had sex with 2 guys. One on may 25 2013 and one on june 8 2013. Who can be the father?

1 doctor answer2 doctors weighed in
Dr. Robert Killian
General Practice 28 years experience
When did Pregnancy?: This is easy. In the future there are conception calculators all over the web and it can be fun to play with them and your dates. To get pregnant with a due date of february 19 sex had to occur may 25th through may 29th. The father of your baby is guy number one.
Washington, DC
A 25-year-old female asked:

My due date is 04/16/14 i had sex with my lover july 19 2013 and then with my husband july 21 2013 who is the father?

1 doctor answer2 doctors weighed in
Dr. Norman Solberg
Obstetrics and Gynecology 55 years experience
One of the two.: Since there were only 2 days separating sex with 2 different guys, there is no way to know which is the father other than dna testing. Any test we have can't pinpoint conception closer than about 4 days.
A 23-year-old female asked about a 23-year-old female:

Sex nov 6, 2013 period nov 14 or 15. Due date aug 22, 2014. Could the father be the dude i had sex with nov 6?

2 doctor answers2 doctors weighed in
Dr. Jeff Livingston
Obstetrics and Gynecology 22 years experience
Calculator: Use a free online reverse due date calculator. Type in your due date and the conception date will be calculated for you.

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Last updated Jan 6, 2013

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