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It is normal to have these findings now because a few kids have it. Normal growth cycle follows these ways. The first one is thelarche. In this, there is a development of the breast. The second one is pubarche. In this, there is a development of pubic hair. Then the next one is menarche. In this one, there is an onset of menses.
In between thelarche and pubarche, there is a growth spurt. So all these occur gradually. It is normal for your child to have this development. You can consult a doctor when there are secondary sexual characters like breast development and growth of pubic hair before eight years of age in a female child.