Within 48 hours after you had sex 9 months earlier.
Actually there's a formula that runs so-many-weeks-so-many-days. Your obstetrician can tell you.
September
The approximate date of conception was May 3rd
sometime in September
Around mid-April or mid-May
If your due date is May 14, 2010 you are 9 weeks pregnant
The approximate date of conception was May 1st 2009.
August 9, 2008.
It is most likely in october month.
May 12th 2010? That would make your due date roughly February 16th
Sometime around late August 2007 or early September 2007 is when you became pregnant
9 months before
The approximate date of conception was May 10th 2009