Built up anxiety feeling 🤔

Okay sounds odd but just hang on with me til the end! Okay so it somewhat started a few years ago when my grandma was dying I was in school taking my exams and just I felt it and I knew in my heart she had passed , I finished my exam and had gotten a call that she had passed about the time I had gotten the feeling and anyways, my bestfriend 4 years ago died, the night before it felt like built up anxiety stuck in my chest I KNEW SOMETHING WAS GONNA HAPPEN but I wasn’t sure what and then the next morning I had found out he had died in a tragic crash and that feeling had went away , tonight I had the same feeling, it was a good night at work nothing seemed off and this guy I work with fucked this other employees face up tonight but after wards it passed, although I felt so bad for this kid I thought I was gonna be sick. This feeling happens often when something bad is gonna happen, Anyways anyone have any recommendations to help with this built up anxiety feeling.

Also sorry not sure where to stick this.