You can Google "due date calculator" and work it in reverse until your get your conception date. Remember though, that these are approximate because the calculators assume that you ovulate on day 14 of your cycle but women can ovulate during a range of days around day 14.
Feb. 2011
The answer is you add one week from the first day of your last period then subtract three months. This is your due date. For example: First day of last period was Feb 13th 2007. Add one week = Feb 20th 2007. Then subtract three months = Nov. 20th 2007 will be your due date. Yes No, you add 9 months and a week to your last period date for your edd. From conception is 9 months minus a week. (38 weeks) http://www.genetree.com/about/conception-calculator.asp
feb. 14 2007
The approximate date of conception was May 16 2009.
The approximate date of conception was June 6th 2008
That's only a 10 day difference. The doctor may have just miscalculated the due date. Your due date is 40 weeks from the first day of your last period.
nice conception date! You due date is roughly 6th November 2008
The approximate date of conception was June 5th 2008.
November 20th
13 to 14 weeks.
Around May 17, 2009
Around feb.28 +/- 5 days