This happened two days ago for a couple of hours. I started to think continuously,there were like a million thoughts one triggered the next at the same time it felt like I wasn't thinking anything. It felt like my head was going to blow up. I started pulling my hair. I was grinding my teeth the entire day (i tried my best not to since my jaw was hurting but it was uncontrollable). I rarely cry but that day I cried thrice for petty issues. I'm afraid something is wrong with me.