Help Me Please

I had unprotected sex the 5th day of having the Nexplanon. Soon after we were done., I made sure to take an Emergency Contraceptive Pill. The Nexplanon should have went into effect the 7th day. It had been two weeks since I’ve had the Nexplanon and a week since I’ve had sex. This week should’ve started my expected period. Today for the first, Ive experience brownish spotting (a good amount). When I wipe, it’s pinkish. Could I be okay?