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How To Determine The Paternity Of The Fetus?

Posted on Mon, 30 May 2016

Question: I had sex with two different men. The first day of my last period was February 5 I had unprotected sex on February 8 while on my period with guy number 1. I then had sex on February 11 with guy number 2. I am 8 weeks pregnant with a due date of November 5th is there anyway to tell who could possibly be the father?

Answered by Dr. Deepti Verma (23 minutes later)

Brief Answer:
Possibly from intercourse on Feb 11

Detailed Answer:
Hi dear,
I have gone through your question and understand your concerns.
Sexual intercourse within5-6 days of the starting of periods do not cause pregnancy as the ovulation timing is far.
The pregnancy is possibly due to the intercourse on February 11, which was day7 of your cycle.
Hope you found the answer helpful.
Regards
Dr Deepti Verma
OBGYN

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Deepti Verma (1 hour later)

My cycle ended on February 10th. Isn't it true that sperm can stay inside you for up to 5 days? So if guy number 1 sperm was on February 8th and stayed inside would that out run guy number 2 sperm on February 11th?

Answered by Dr. Deepti Verma (1 hour later)

Brief Answer:
Detailed answer below

Detailed Answer:
Hi dear, the intercourse on Feb 8 was in completely safe period, meaning there was no chance of pregnancy.
Moreover, the ovulation occurs around day 14, by which the sperms from the first intercourse are definitely dead, while there are chances that sperms from the second intercourse are still viable.Hope you found the answer helpful.
Regards
Dr Deepti Verma

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar

Follow up: Dr. Deepti Verma (29 hours later)

I looked at a calendar and it seems that my ovulation day should have been Feb. 19th which makes me wonder why my due date is Nov. 5th. still with the information above if I had sex with guy #2 on Feb. 11,14,and 16th and guy #1 on Feb. 8, and guy #1 pulled out on Feb. 18 and 19th(ovulation day possible) what would you think?

Answered by Dr. Deepti Verma (5 hours later)

Brief Answer:
Detailed answer below

Detailed Answer:
Hi dear, pregnancy is likely to be from guy 2 if the guy1 practised pull out method properly.
Otherwise, it can be from either of the two.
Regards
Dr Deepti Verma

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar