Women can get pregnant even 5 to 8 days after having sex.
Pregnancy doesn’t start the day you have sex — It actually takes up to 2-3 weeks after sex to become officially pregnant.
It can take up to 6 days after sex for the sperm and egg to join — if a sperm cell joins with an egg, it’s called fertilization. The fertilized egg moves towards your uterus. It gets to your uterus about 3-4 days after fertilization, and it can float around in your uterus for another few days. Pregnancy officially begins during implantation — when the fertilized egg attaches to the lining of your uterus, and the hormones needed to support pregnancy are released. It can take 3-4 days for the fertilized egg to completely implant itself in the lining of the uterus.