When did you conceive if your due date is September 15 and last period was December 10?

To calculate the approximate date of conception, we can work backward from the due date and consider the length of a typical pregnancy.

A pregnancy typically lasts around 40 weeks from the first day of the last menstrual period (LMP) to the delivery date.

Given that your due date is September 15, we can count back 40 weeks to determine the approximate date of conception.

Starting with September 15 and counting back 40 weeks, we arrive at December 24, 2022, as the estimated date of conception.

Please note that this calculation is based on average pregnancy durations and may vary slightly from individual to individual. It's always a good idea to consult with a healthcare professional for a more precise estimation of conception dates based on your specific medical history and circumstances.