If i'm currently on birth control pills and taking them regularly should i worry if my boyfriend ejaculates inside me?

BCP's: risk of preg: The prescribed method for taking the oral bcp's includes beginning the first active pill during the first few days of a regular period. It is important when taking the "sugar pills" (placebos) to start the first (active) pill of the new pack of bcp's on the next day after the end of the placebos. To be extra cautious, start the new pack active pills on day 5 of the placebos: 99% effective.