Fancy yourself as an agony aunt? Add your answer to this question! A
female
reader, CindyCares  +, writes (27 April 2010):
 If you are gonna be 12 weeks on Thursday that means that your egg has been fecundated around February 11th.Since the sperm,though,can survive in the womb up to 4 days that means that yes,you might have been fecundated by intercourse had before Feb.11th,starting from Feb.7th
A
female
reader, ffogalilly  +, writes (27 April 2010):
Around the 11th of Feb.
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A
female
reader, ffogalilly +, writes (27 April 2010):
when was the date of your last period, then calculate from there.
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A
reader, anonymous, writes (27 April 2010): This is verified as being by the original poster of the questionand hey don't worry about being young HJK 1995 i got pregnant at 15 and had a baby shes now 4 and half and i'm still with same partner x
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A
reader, anonymous, writes (27 April 2010): This is verified as being by the original poster of the questionhi thanks for the answers. i have had a scan and they said i was 11w 5 i will be 12 week on thursday.. but i can't possibly have got pregnant before the 9th of feb ?? :?
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A
reader, anonymous, writes (27 April 2010): if i worked it out right it would be around the 16th to the 21st of feb. Which would be ur ovulation cycle. the drs will work out the due dat going by the first date of ur last period which will mean ur baby is actually 9weeks and 5days because they give u 2 weeks For conception. So u could possibly be due 2weeks after the date the dr gave u. Best idea is to get an ultrasound because they can date it perfectly for u
I hope i have been of some help hun. Good luck
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A
female
reader, Tisha-1 +, writes (27 April 2010):
 Now, the day that you actually had sex and the day the fertilized egg implanted in the uterus and started your body producing the hormones that are detected by a pregnancy test may be fairly far apart. Watch this video for that explanation:
http://websrvr40nj.audiovideoweb.com/avwebdsnjwebsrvr4501/portal/media/media-050516-pregnancy.html
I would simply ask the OB what the date range might be.
Good luck, and congratulations!
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A
female
reader, hjk1995  +, writes (27 April 2010):
If my calculations are correct you concieved around 11th February (I am 15 and I am 11 weeks and 4 days, I know young but we did use a condom obviously something went wrong :S)
Good luck with your pregnancy :D x
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A
female
reader, hpoco  +, writes (27 April 2010):
 Its impossible to know exactly. Probably around the 14th-22nd of February.
Look at this: http://www.americanpregnancy.org/duringpregnancy/pregcalc.html
There are lots of other calculators like that, as well.
Congrats on the baby!
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