My boyfriend cums inside me every time we have sex . can i get pregnant if i take my birth control correctly every day?

Unlikely: The likelihood is low; however, it's not zero percent. Depending on the literature you read, the effectiveness of OCPs (oral contraceptive pills) can range anywhere from 94-98% (assuming the pill is taken correctly and as prescribed). Having said that, OCPs are a tried and true method of contraception used by millions of women around the world. There's lots of data to support its use.