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Pregnancy Conception Date Calculator: Based on Last Period & Due Date


Question
The question i have is, is that I wanted to know when did i conceive. My last menstrual period was on the 21st of March, and my due date is December26th. I had sex with my ex boyfriend on the 27th of March, but I am not sure when i concieved. I know its 40 weeks in a pregancy, but I am not sure at all when i did conceive

Answer
Alexis,


Based on your due date, you most likely conceived around April 5th.  This doesn't mean that you had to have intercourse that day, as sperm can live in the reproductive tract for up to 5 days.  Any intercourse in the 5 days prior to this could have resulted in the pregnancy.



Best,
Catherine