Could I be pregnant

Aria

So I started birth control early October and this would be my first period on it. I started taking the non active pills on Sunday but it still hasn’t came. Me and partner did have a couple slip ups but plan b was taken just as a precaution because I was fertile and it wasn’t the full 2 weeks where the birth control was active. I’ve been cramping and have had tender breasts but I’m 2 days late. Your thoughts??