WHEN SHOULD I EXPECT MY ACTUAL PERIOD ?!

I’m coming off from Estarylla birth control. I started taking it right after I had my daughter in Sept. But last month my period come back to back so I stopped taking it. & now eve &+ GLOW is saying my period is late...

I have had sex since stopping BC, & we have not used condoms. We just make sure he pulls out in time!

Could I be pregnant ? Or has my body not regulated back yet ?