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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How To Determine Conception Date After Unprotected Sex Followed By Intake Of Contraceptive Pill?

Hi, My period is regular and of around 28 days. we had intercourse (but he didn't cum in me) on 16th Nov, I took unwanted 72 within 24 hours on 17th Nov. I got heavy bleeding and bleeding like regular period for 5 days from 22nd to 26th Nov. after that we again had unprotected intercourse on 2nd to 5th Dec. I took the pregnancy test on 27th Dec and its positive. So what can be the date of conception? 17th Nov or 2-5 Dec?
Fri, 10 Jan 2014
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General & Family Physician,  's  Response
Thank you for writing in HMC
your first date of the last period is taken as your LMP which is nov 22. you had unprotected intercourse on 10-14th day of your period that was the time of your ovulation after which you conceived. doctors ask for your LMP which is nov 22. so as of December 27 your are 4 weeks and 5 days pregnant. Kindly confirm the same with an ultrasound scan. and as you asked the date you conceived would be any day between 4th-8th dec.
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How To Determine Conception Date After Unprotected Sex Followed By Intake Of Contraceptive Pill?

Thank you for writing in HMC your first date of the last period is taken as your LMP which is nov 22. you had unprotected intercourse on 10-14th day of your period that was the time of your ovulation after which you conceived. doctors ask for your LMP which is nov 22. so as of December 27 your are 4 weeks and 5 days pregnant. Kindly confirm the same with an ultrasound scan. and as you asked the date you conceived would be any day between 4th-8th dec.