My 9yr old started having her period about 3 weeks ago. She got it for 2 days,stopped-got it the following week for 2 days,stopped-and just got it again a week later! she had blood work done to see if there might be something wrong with her hormone levels and such, but it showed nothing. She is now going to a pediatric edocrinologist and gynecologist tomorrow to make sure she is ok. She weighs 83 pounds! 4"8 inches. Shows absolutely no sign of breast buds or hair growth. Has anyone else had this happen to their daughters at that age and what did you do about it? Did you go see a doctor?