Just noticed dd's breasts seem swollen, and she mentioned that she has hard lumps behind her nipples that are sore...having read some threads on this, I gather this is the beginning, and no 7 is not too young. Can't quite believe it. Only seems like a moment ago she was a toddler! She's always been small for her age, and is still one of the smallest in her class. Any advice would we welcomed, anyone been through this from 7? Any good books I should read?