Young engaged and trying

Naomi
My fiancé and I are in our young twenties and have decided to start trying for a baby. My mom had a hard time getting pregnant at my age and we don't want to miss our chance. But his Dad went on a yelling rant about how were to young to get married and that we better not have a child. Now I'm scared that I'll end up pregnate and he will go off on us. But we really want a family advice ?