Teen pregnancy?

Im 16. My last period day was October 31st and I’m currently 7 days late for my December cycle. Me and my boyfriend had unprotected sex multiple times during November. I’m getting a test tonight. I’m really nervous. I already talked to my older sister about it and she thinks I will be fine. I have been going through a lot of stress lately and recently had a huge routine change. Should I be overly worried?