Today is March 12, 2009. Eight weeks and two days ago was January 13th, 2009. That is when you would have conceived if the ultrasound were exactly correct. (Even if you only had sex on the 8th, sperm can live up to 6-7 days in the woman's body after ejaculation).
An ultrasound estimate is only approximate; somewhere around the 13th of January is when your baby was conceived.
An ultrasound estimate is only approximate; somewhere around the 13th of January is when your baby was conceived.