Double Protected, but still late?

Hi ladies! I'm currently on the pill, and take it religiously on time; and my fiancé is a stickler for always putting a condom on and checking them before we get started. My question lies in why my period might me a week late? I've had no spotting, and my cramps have been off and on. I have noticed the last two weeks he's been a little rougher, but I doubt that has anything to do with it. I would just love to ease my mind, I have been overthinking this 😰