My children are earlier bloomers as I was. The hormones in food now days have pushed our children's biological start dates ahead of us when we were younger. It's nothing to be afraid of or even worry touch over. The doctor should have explained this. Growth hormones are in just about every piece of meat we eat.
My daughter is 9 and started my wife started early too, everyone is diff and girls in my daughters class started before her we had the do the birds and bees talk at 8 because 2 of her friends came to school with pads and such, she's also been wearing deodorant for a year now too, also try chlorophyll capsules u can get them at almost any health food store our whole family takes them they are an internal deorderizor takes away BO smells bad breath, makes urine,stool and gas have practically no smell as well