This page was started before I have kids to be ready for them. Lots of young women from my age have the same issue: what to do with their life. To have career or think about the future family. In the working world people can forget about themselves as they are humans and not just the slaves of money or rush.
To be ready for your family takes time. To have healthy pregnancy needs preparation from woman and man as well. Keep this 9 months on a good level is a big job. Have you thought about what to eat, what types of sport you can do, how to keep your beauty?
You will be a MOM, but you are still a woman. Remember, your basic roll will not change, you will just get extra stuffs to do ;) Eat healthy, do the sport and be beautiful. You do these things for yourself first, as if you cannot keep your premier roll, you would not enjoy your life. When you are happy and strong, then you can help your family. It is pretty similar to the airplane oxygen mask use ;)