It is very normal for young women to have irregular cycles; they may spot for months, or they may have one period and then not get another for many months. If she is bleeding heavily, filling more than 2 pads an hour, then it is enough for concern.

My daughter is only 10 years old and she has her monthly period already. What concerns me is she is having it twice a month for 5 days. Is this normal at her age?