Hello,
First
menarche (first period) can be many changes happen before that 2 years, such as growing taller, Breast development, Pubic hair and
acne. Normal Menarche start from age 10 to 15. Normal amount in blood loss in with each menstrual flow is 30 to 50ml. There is no practical way to measure the amount of flow. If she bleed more than 90ml, it is abnormal which is related to immaturity of Hypothalamic Pituitary Ovarian axes(part of the brain). Other cause include
pregnancy, infection,
stress,weight change,
bleeding disorder. Less common causes are cervical polyps and
leiomyoma such as fibroids.
It is not necessary for a girl to see a gynecologist just because they started their period.
The first period often very heavy and painful.
Your girl 9 years and 6 months, her first menarche is a little bit earlier than normal but can be normal in some cases. You should recognize the change I had mention above like breast development, pubic heir happen 2 years before first period. If your child has no those change and keeps bleeding heavily please bring her to see Gynecologist to make sure.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Heang Chan Raksmey, General & Family Physician