Conception occurs when a sperm cell from a fertile man swims up through the vagina and into the uterus of a woman and joins with the woman's
How long does it take for conception to happen?
Pregnancy doesn't start the day you have sex — it can take up to six days after sex for the sperm and egg to join and form a fertilized egg. Then, it can take three to four days for the fertilized egg to completely implant itself in the lining of the uterus.
At what point does conception occur?
Conception occurs during the part of a woman's menstrual cycle called ovulation. Doctors consider day 1 of a menstrual cycle the first day of a woman's period. Ovulation usually occurs around the midpoint of a woman's menstrual cycle.