Can you get pregnant 12 days before your period is due?

Possibility of PG: Yes, you can. Theoretically you can get pregnant any time you have unprotected sex. Twelve days before your menses would be an especially possible time as it would be around the expected time of ovulation.

Yes.: Using calendar based methods to avoid pregnancy is not a good method. Ovulation, and subsequent high fertility days, can vary from month to month. If you are having sex without a proven method of birth control, you are very likely to become pregnant. Please talk with your doctor about birth control, soon.