Not finding out the gender?

Malia • Mommy to 2 little boys
My husband really wants to know the gender of our baby (I'm only 4 weeks) but I really don't want to. Is there anyone out there that didn't find out the gender and was able to "plan" for the baby! My husbands reasoning is that we can't plan for the baby if he don't know what it is...I know it's a baby...that's all I need!