I think I had an anxiety attack today

I think I had an anxiety attack today when I was at work. I've never felt like this before. It was busy at my job today (I'm a waiter) and near the end of the day I was just worn thin, running on fumes. From the moment I got there it was packed, it was never slow, it never slowed down and I think I got overwhelmed trying to clean a table in the main and busiest room because I was being barked at by bosses and coworkers. Every time I would hold a cup or a plate my hands were shaking really bad and I felt weaker, I had to have looked like I had parkinsons or something and then I just kind of 'shut down.' I got really quiet and sort of dissociated, or zoned out. I know I did but I also wasn't all there, yknow? As soon as I shut down I knew I needed to go somewhere else and distract myself and for like an hour straight I just cleaned in the back room, clearing tables and stuff like that. I didn't talk to or acknowledge anyone the whole time. It's like I was on autopilot which isn't new, but this was different than usual.

I did not like that feeling. Idk if that is an actual anxiety attack, but something wasn't right, I was definitely overwhelmed though