I knew my grandma had died before anyone else did...(just read it! It will all make sense)

This was a few years ago. Here is some background info for you guys, I live in Indiana with my parents and my grandma lived in California so we barely saw each other or even talked. So the story starts when me and my parents were at this local pizza place getting a snack after one of my sports games. We were sitting at a table waiting for service when this feeling ( I don’t know how to describe it) rushed over me all I did to cry and hyperventilate . My mom tried to calm me down but all I said ‘something’s wrong she should still be here it was not the way it should have been’ at the time nobody knew what I was talking about... nether did! But later that day my grandpa call us and yells us that my grandma had died around the time that I started to freak out... she had been in the hospital a few days prior but not for her eventually cause of death for a completely different reason. And why I knew about something being wrong is still a mystery to me!