Husband doesn't believe in maternity leave

Angela
So, we don't have a lot of money but I'm  hoping to take 4 weeks unpaid leave. 
I don't think this is so unreasonable, but my husband doesn't think I'll need that long and would probably want to get back to work sooner. 
Apparently it's easy when they're so little. So he says. He has 3 grown up children from another marriage. But admits he can't remember what his ex-wife did at the time. 
What do you all think? How long will you take off?  Any 2nd/3rd time moms can let me how they did. 
Thoughts?