I'm 11 and I haven't started my period. When I wake up, I'll be happy and in a great mood. Then 30 min. later, I'll feel like crying my eyes dry! And I just thought I'd add that I'm a SERIOUS reader. I can't put a book down after I start one. Sometimes, when I'm reading a series and I finish it, I feel sad and like I'm gonna cry for a day or two, and nothing fixes it!