Yesterday I took a final for one of my classes. I had been studying all weekend in order to take this test. Anyway, it wasn't that hard. It was one of those tests where if you actually studied what you were supposed to study, there is no way you could fail. So I know for a fact I aced the test and I completed the semester with an A in that class. I thought that this would make me feel really happy, but it didn't. As soon as I left the classroom, I went into a bathroom stall and cried. When I got home from school, I cried off and on for the rest of the day. My mom came home from work and all I wanted was hugs from her. I couldn't tell her why I was so clingy, so she was a little annoyed. I know this was strange behavior.

What is wrong with me?