What do i have?

Okay. So I was at the strip yesterday walking freemont (and for those of you that know what it is, ITS REALLLY FUCKING CROWDED AND BUSY) well usually I'm fine but yesterday I started crying, I couldn't breath, and I wanted to leave. It was extremely loud and so many people. But I couldn't stop crying and tearing up. Idk what was wrong with me. My sister said that have claustrophobia but usually I'm fine in small spaces. Idk what was going on. Do you guys happen to know? (Also I went to the bathroom and I was fine and that had a few people in it too (where I had to wait) and then as soon as I walked out again i started crying but I couldn't control it either i tried to stop but I couldnt))