Plan B

I took a plan B after having unprotected sex that night. I then started the inactive pills of my birth control the next night. it’s been a little over a week and I still haven’t had a period and I’ve started a new pack of birth control. Do I wait until the next inactive pills or could I possibly be pregnant. I’m almost positive he didn’t come in me and I always take my birth control right. Please help I’m not sure what to do!