Husband wasting money

Lisha
I'm 15 weeks pregnant.
My husband has always spent his extra money on movies, comics, and concerts. There are worse habits, I know, but once we started ttc and I became pregnant he vowed that he'd save money and we'd buy things we need each month.
We agreed we'd wait until after Christmas to start buying. After the holidays, I bought 2 cloth diapers and crib sheets. What does he buy? Two movies (he owns 950+, not joking). 
I made a list of expenses up to June when the baby is born and tried to talk to him about why it's so important to watch our spending. He flipped out as usual talking about "it was only $10" and "those movies aren't on Netflix" and "I'll buy stuff for the baby next paycheck." Yes, it's $10, but he continually buys movies every week and wants to go to a concert every month (which we agreed we'd have to cut back on drastically). He makes excuses EVERY TIME.
Any advice on how to get through to him? I'm stressed enough as it is and money worries aren't helping.