Possible break down pending

I'm on my way to uni and I can feel a mental break down coming. I don't know if it's going to happen today. Probably not, but maybe at home later or even throughout this week sometime but I had my week long break from the semester this past week but I was constantly doing something. I don't think I stayed at home once and if I did I was worrying about uni. I've been so anxious lately. I'm like in a constant state of panic, my heart feels like it beats fast all the time. I might have anxiety but I don't want to self diagnose but it would make sense since my mom and sister both have it diagnosed. I'm also really sensitive today, I like have this image in my head that everyone is tired of me.