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How To Determine The Date Of Conception?

Posted on Fri, 7 Aug 2015

Question: I had my period March 10,15 then I had sex with this guy March 29,15 I was worried I might have gotten pregnant so I took a test and it came out negative. April 10th came and I believe it was period that came it was so weird it was normal the first day but then the next couple of days it was on and off but I did wear a Tampon cause it was enough to leak through. Then the week of April 20-28 I had sex with another guy my ex boyfriend and then my period never came I didn't get any signs of bleeding in May . I went to the doctors XXXXXXX 17 and I was 8 weeks pregnant and my due date is January 26,16. I'm worried could the baby be the March guys baby? I'm currently 14 weeks.

Answered by Dr. Vivek Chail (57 minutes later)

Brief Answer:
Possible date of conception between 29 April, 2015 and 9 May, 2015

Detailed Answer:
Hi XXXX,
Thanks for writing in to us.
I have read through your query in detail.

1. Using mathematical calculations and due date as 26 January, 2016, the following possible dates have been obtained with reference to your pregnancy.

Possible conception date: Apr 29, 2015 - May 9, 2015
Possible sexual intercourse date that led to the pregnancy: Apr 24, 2015 - May 9, 2015

2. Please note that the above is by logic and use of calculations based on the fact that you have regular 28 day menstrual cycles.

3. A paternity test is the most accurate method to confirm the true father of the child.

Hope this answers your question. Please feel free to correct any oversight in my interpretation of your problems and discuss them in detail as per your requirements.

Hope your query is answered.
Do write back if you have any doubts.

Regards,
Dr.Vivek

Above answer was peer-reviewed by : Dr. Shanthi.E

Follow up: Dr. Vivek Chail (1 hour later)

So do you think it's possible it could the March guys baby at all? I know a paternity test would be best but I'm trying to avoid that to be honest. I don't want my boyfriend to know about the XXXXXXX guy

Answered by Dr. Vivek Chail (2 hours later)

Brief Answer:
It is not possible to be from March intercourse going by ultrasound date

Detailed Answer:
Hi XXXX,
Thanks for writing back with an update.

1. It is likely to be a baby born from sexual intercourse that took place in the last week of April.

2. The baby is unlikely to be from the guy who had sex with you in March.

3. The above information is keeping in mind your ultrasound scan due date.

Hope your query is answered.
Do write back if you have any doubts.

Regards,
Dr.Vivek

Above answer was peer-reviewed by : Dr. Shanthi.E

Follow up: Dr. Vivek Chail (7 hours later)

Thank you I appreciate it. Very helpful I'm not in doubt in anymore.

Answered by Dr. Vivek Chail (35 minutes later)

Brief Answer:
Welcome

Detailed Answer:
Hi XXXX,
Welcome and thanks for sending in your query.

Should you have any more health queries and would like me to answer them then please mention "Query Id 207146 DR XXXXXXX CHAIL" in your query and the moderators will direct it to me. I will reply back to you at the earliest.

Wishing you good health.

Regards,
Dr XXXXXXX

Note: Revert back with your gynae reports to get a clear medical analysis by our expert Gynecologic Oncologist. Click here.

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