some stranger guy did a kinda pretend to punch me in the face

So i was in the showers, which cause me great anxiety to shower in locker room after coming out of swimming pool, so i was putting hand on chest like of anxiety, and with head down, and i kinda some some young guy throwing a fist in my face not very close but kinda close, I thought like what the..... I was already too anxious to do anything, also showering in public space especially when there are more people kinda gives me a lot of anxiety. For me a lot of the problem is that many times something that bothers me at one time I keep on thinking about it over and over again, is like I get into this loops of getting stuck in thoughts in things which might be insignificant to some people. 

thanks for reading