Is conception the day you got pregnant or is two weeks before that?

The day of conception is considered to be the day that a sperm fertilizes an egg, which typically occurs about two weeks before the start of a woman's menstrual period. This is known as ovulation, and it usually happens around day 14 of a woman's menstrual cycle, although this can vary from person to person. Therefore, conception occurs two weeks before the start of a woman's menstrual period, not on the day she got pregnant.