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Two possible methods to determine conception

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hi there can you help i split from my husband on the 19th jan 2010 and had sex with my ex on the 19jan i did take the after pill, i have just found out am pregnant am 6weeks and 1 day i have a bleed on 3 jan 2010 for 4 days could this be my ex baby am so worried now that i have to tell my husbband thank you


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replied May 10th, 2010
Pregnancy Calendar Conception : When did I Conceive ? Answer A1


There are two possible methods to tell when you conceived.
The first method is to subtract fourteen days from the predicted start of the next menstrual period. Since your last menstrual period started on 01/03/2010 and the average length of your menstrual cycle is 34 days, your next menstrual cycle should have started on 02/04/2010. When you subtract fourteen days, the probable day when you ovulated was 01/21/2010. Even though there is a chance for the spermatozoids to survive for up to 72 hours in a female’s body, it is unlikely that conception has occurred given the fact that you also took the morning after pill (supposing it was taken as recommended by the manufacturer). However this is not a secure method because the length of the menstrual cycle might vary in women sometimes.

The other method is ultrasound examination of the development of the baby. Depending on the stage, a gynecologist is able to determine the time when the conception occurred. Given the fact that you are 6 weeks and 1 day pregnant on Feb 15, the most probable day for conception is 01/04/2010 a day after you had the bleeding on 01/03/2010. So, either the gestational age determined by an ultrasound scan is not correct or you experienced ovulation bleeding on 01/03/2010. Ovulation bleeding differs from a regular menstrual period in that it is lighter and the blood is more pink whereas in a menstrual period it is darker and sometimes even coagulated blood might be found. You might try to remember if the bleeding was as in a regular menstrual period or it was different.

Of course, only a genetic examination can tell for sure who the father of the baby is.


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