Dr. Manwani Saloni Dilip
Obstetrics and Gynecology
The following is an actual conversation between an iCliniq user and a doctor that has been reviewed and published as a Premium Q&A.
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Patient's Query
Hello doctor,
I am currently pregnant. And I want to confirm the father of the baby. I had been tracking LH hormone using an ovulation kit, and LH surge was on Day 16 (if the first day of the period was Day 1), with ovulation predicted on Day 17. I had intercourse with my current partner on Days 15, 16, and 17. LH decreased after Day 16. There are no known issues with my partner’s sperm count, quality, etc., (confirmed by fertility doctor). I then had sex with someone else on Day 19 but used a vaginal contraceptive film (inserted 60 to 90 minutes before intercourse), and he pulled out before ejaculating.
Now I am pregnant and the estimated due date based on ultrasound tracks back to conception occurring on Day 17 (predicted day of ovulation). With the given available information, can I be confident that the baby’s father is my current partner?
Hi,
Welcome to icliniq.com.
So based on the details you have provided, it looks more like your current partner is the baby's father. But the sperm stays viable for 72 hours, and the ova can be fertilized for 48 hours. Hence it would be best if you could get a karyotyping done for paternal analysis as that would be more accurate and reliable than just on the timing of intercourse.
Patient's Query
Hello doctor,
Thank you for the answer.
So even though I had unprotected sex with my current partner in the days leading up to and on the day of ovulation (as I was to trying to conceive), and the fact that there was sex with someone a couple of days after ovulation (even with contraceptive film and pulling out before ejaculation), is there a chance that the other person could have caused the fertilization? Would the higher probability be with my current partner since his sperm should have still been viable and present at the time of ovulation?
Hello,
Welcome back to icliniq.com.
Yes, the probability is higher with your current partner as you have not used any protection and had intercourse multiple times. The thing is, no form of contraceptive is 100% effective, so I cannot completely rule out the possibility of intercourse with the other partner not leading to fertilization. Yet the chances are higher with your current partner.
Patient's Query
Hello doctor,
Thank you for your concern.
Even though it is not possible to rule out the possibility of fertilization with the other partner, is it possible to estimate how likely (with the given information above)? Perhaps even just somewhat unlikely to very unlikely that it would be him v/s my current partner?
Thank you.
Hi,
Welcome back to icliniq.com.
So with medical knowledge, there is no way to give an exact percentage with just this information. Personally, my opinion would be it is very unlikely for the other partner to cause fertilization. This is just my personal opinion there is no way to statistically predict with this much information medically.
Thank you.
Patient's Query
Hello doctor,
Thank you for your response.
I am just wondering what other medical information would be helpful to better inform a prediction or probability or that may influence it one way or another? (Other than prenatal paternity testing)
Thank you.
Hi,
Welcome back to icliniq.com.
So, you can do a NIPT (noninvasive prenatal testing) that can tell the blood group of the fetus. Based on your blood group and the blood groups of the partners, you can then see the probability. Again this is not completely accurate.
Thank you.
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Obstetrics and Gynecology
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