When do you think iconceived...?

Question

I know someone who had twins on Aug. 19th.. She was 38.1 weeks, she is not sure of her conception date.. we used the calender and it is saying the 10th of Dec. but she had s*x on the 8th, the 9th and the 15th of dec. which one of the dates sounds best to you? Wouldn't the 19th of Aug been to early to take if they were conceived on the 15th of december?

Answer 1

her due date would have been around the 1st september so go back 40 weeks which makes 26th november for her last period then add 2 weeks for conception and would make 10th december so she could have got pregnant on the 8th or 9th as sperm lives for a few days  

Answer 2

Most likely it was from having s*x on the 8th or 9th. Sperm can live in a woman's uterus for up to 6 days! Also, some women dont ovulate exactly every 28 days (do you get your period on the exact 28th day every time?) So, she may have ovulated a day or so before.  

Answer 3

I would venture to guess that she most likely conceived on August 8th or the 9th if your other dates are correct.