When does a pregnancy begin
Q:When does pregnancy begin?
A: A pregnancy usually begins when a sperm fertilizes an egg (fertilization), and the egg subsequently implants in the uterus (conception or implantation).
The beginning of the pregnancy is usually calculated as starting from the first day of your last menstrual period. You can create your own personbal pregnancy timetable HERE.
According to this calculation, you seem to become pregnant 2-3 weeks before you actually conceive but in truth your pregnancy does not begin until implantation and a posirive pregnancy test.