When did you conceive if your due date is April 18?

To calculate the approximate conception date, we need to subtract 280 days (40 weeks) from the estimated due date.

Estimated due date: April 18, 2023

Conception date calculation:

April 18, 2023 - 280 days ≈ July 26, 2022

Therefore, the approximate conception date for a due date of April 18, 2023, is around July 26, 2022.