Late period

About 4 weeks ago my boyfriend and I had sex together for the first time (which was actually his first time). Well during intercourse he pulled out and told me he felt like there was something off with the way the condom felt only to realize the condom broke and realized the tip of the condom was missing. We stopped what we were doing and I started to panic a little, however we found the tip of the condom (which was odd bc i had never heard of the tip of a condom just popping off that way) and there was no semen in the tip at all or in the rest of the condom and he swears he didn't cum inside of me (plus I've been told when that happens you are able to feel it), and he went to the bathroom after the first time he ejaculated. This week was also my colleges finals week so I've been stressed out about that as well as making sure my period arrives. I should've gotten my period around yesterday, but I'm giving it a few days bc i know stress can set it off. I've always used condoms when I've had sex before and I've never had one break like this so I'm worried. I'm wondering if there's a possibility I could be pregnant or if im just being paranoid and the stress is setting off my period 😅