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.
Even after that, while some can become pregnant the first cycle, others will require months of cycles before pregnancy can occur. Still others (this is quite uncommon) may not be able to become pregnant until complete weaning has occurred.