Pregnant on pill?

Selah

I am on my second month of birth control pills. I do not take them religiously (I’ve been hours late and I’ve missed one). I’ve had unprotected sex multiple times this month.

I’ve noticed my boobs have increased in size and are tender. I also started having lower abdominal cramps and today I started spotting (which is brown). All of this is happening while on the white active pills.

Can I be pregnant?