Should I be worried?

It’s been almost 8 weeks since the first day of my last period. My periods are irregular, but my app is still somehow accurate when predicting when they’ll come. However, I took a Plan B 9 weeks ago, bled a week later and that was my period 8 weeks ago. I had protected sex again after that (the condom broke, but he wasn’t in me, his dick was just on my hole when it broke... precum?) but now my period is late by 15 days. I don’t have any pregnancy symptoms, so I’m not sure what to think. Getting a pregnancy test tomorrow, but just wanted to hear what people think!