couldn't breathe, help!!

the other day I had a volleyball game at another school. our team was already loosing pretty bad, and I got stressed out and kept making mistakes over and over. I made a really good block but stepped over the line and someone got mad at me and while I was standing on the court it felt like I couldn't breathe. I assume I must have looked really upset or bad because my coach subbed me out and told me I needed to get water, and I started crying when she did. I don't know what happened, was this like a panic attack or something? help:(