My period was a day late 🤨

So I’m 17 years old and I am very sexually active. I’ve been having sex for 2 years now and I’ve had multiple pregnancy scares (I over think a lot 😭😂) anyways recently I had unprotected sex (which I do tend to do a lot (with the same person btw)) and it was the day before I was suppose to get my period... my period ended up being a day late (which hasn’t happened since I started birth control a little over a year ago) so my concern is... is there a way I may actually be pregnant...?

I made a doctors appointment to take a test and everything but that’s not for another few days so I was hoping someone here could help me out 🙃