Being pregnant and on birth control will you still have your period?

It's not possible to be pregnant and on birth control at the same time. Birth control is designed to prevent pregnancy by stopping the release of eggs from the ovaries, thickening cervical mucus to block sperm, or changing the lining of the uterus to prevent implantation. If a woman is pregnant, it means that one of these mechanisms has failed and an egg has been fertilized. Therefore, a woman cannot be pregnant while taking birth control correctly.