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When Did I Conceive? – Determining the exact date of conception can be tricky and several different methods can be used. The most common method is to track the first day of your last period and then count back two weeks. This will give you an estimate of when you ovulated and conceived.

You can also use our conception calculator. These calculators will ask you for the first day of your last period and will then give you an estimated due date.

When Did I Conceive Based On Due Date?

To find a date of conception with a high probability, you should…

First Date of Last Month Period (LMP)

It’s also possible to determine the approximate date of conception by Ultrasound. If you have had an ultrasound, your doctor should be able to tell you when your baby was conceived.

Keep in mind that these are only estimates. It’s possible to conceive a day or two before or after the estimated date.