No way. A girl starts her menstrual, which is when she is ready to produce offspring, at the age of 9-13. Girls don't play with baby dolls for no reason. It is something that is inside of all women (no pun intended). Even though if I had a daughter if she got pregnant any earlier than 25 I'd whoop her ass.
I had my first baby at 18 and my 2nd at 20.
I'll be conceited/vain/boastful and proud and say that I'm a badass momma.
Every single breath I take, every single sound that penetrates the tiny little hairs within my ears, every syllable spoken by or to my children it is filtrated through me.
Always has been and always will be.
It's whether or not you truly want to be a mother and recognize what you have and what you want and will do with it.