help? sugar pills and period?

Megan
So when I first started bc, my period came the first day of my sugar pills, my body was used to a short cycle before I started birth control
This month, I'm on my first sugar pill and my period hasn't come yet? Is it just my body adjusting to the pill? I had sex this month but it was protected with a condom, and we did it just a couple days ago so I'm not pregnant