TTC as a Teenager

I know this may sound crazy to some people but I'm 16 in January and ever since I had a pregnancy scare last summer all I've wanted was a little tyke to call my own. Me and my boyfriend are both extremely responsible and want a big family. We're both aspiring to go into the medical field; I want to be a pediatric oncologist and he would like to do biomedical engineering or neurology. I just feel like my time is here to be a mother ..