I started the combination birth control pill a month ago.

During the first week it doesn't protect against pregnancy, and although I knew that, I still had unprotected sex with my boyfriend, but he pulled out. After a week l, I let him cum in me. He has been doing it for a while, and everything seems fine. But, I have 2 active pills left and my period still hasn't came.

According to my regular cycle, it's 5 days late.

I don't know if it is because I just started birth control or I may be pregnant.

Should I be worried? and do you guys let your boyfriend come in you?