Did I experience some sort of anxiety episode?

Okay so, earlier today my boyfriend and I had gone to a bar where we always go once a week to play pool and do the occasional trivia nights. Tonight was trivia, and we were both kind of out of it because we had each gone to bed relatively late (him at 1 am, and me at 2). Somewhere towards the end of trivia I got really tired, and started feeling extremely overwhelmed for what felt like no reason at all, other than there was just too much going on in the bar. Over the next 10-15 minutes-ish, I started feeling a pressure in my chest like I was going to cry, but I had no clue why because I didn’t think there was anything I was really upset about in that moment, especially not to the point of crying. So once trivia is over we head back over to his car, and I had told him about how I just didn’t feel good and I couldn’t really explain why. So when we both got in the car I asked if we could just sit in there for a few minutes before he took me home, he of course said yes, and I immediately started crying. It didn’t last long, and I felt a lot better after I had finished crying, but then a couple minutes later I started crying again, even harder, and I still wasn’t completely sure why I even felt like crying in the first place. The second time lasted a lot longer, and at that point I had just started crying over anything that had been stressing me out since I was already crying. I also realized that I was really scared and worried that when he left after dropping me off that something bad would happen to me, and I didn’t want to be left alone. I’m not sure if this all was some sort of response to holding in some really intense anxiety that has been on the forefront of my mind lately, and it was my body just flushing it all out because I’ve been trying harder lately to stay positive even when I’m not feeling mentally well. Let me know any thoughts, or if anyone has had a similar experience.