Short period comets that originate beyond the orbit of Neptune but are generally moving level with the orbits of the other planets are in the what?
No! You can get pregnant before you have your first period, and many surprise pregnancies happen just that way. To prevent pregnancy after you have your baby, you'll have to use birth control every time â even if you're breastfeeding.
If your periods are very regular, the ovulation always taking place 14 days before the period starts, and the egg being fertilizable for 24 - 36 hours after ovulation, chances that one week before your period you'll get pregnant are very slim,